zend_object_handlers.c

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Andi Gutmans <andi@php.net>                                 |
   |          Zeev Suraski <zeev@php.net>                                 |
   |          Dmitry Stogov <dmitry@php.net>                              |
   +----------------------------------------------------------------------+
*/
 
#include "zend.h"
#include "zend_globals.h"
#include "zend_lazy_objects.h"
#include "zend_variables.h"
#include "zend_API.h"
#include "zend_objects.h"
#include "zend_objects_API.h"
#include "zend_object_handlers.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_closures.h"
#include "zend_compile.h"
#include "zend_hash.h"
#include "zend_property_hooks.h"
#include "zend_observer.h"
 
#define DEBUG_OBJECT_HANDLERS 0
 
#define ZEND_WRONG_PROPERTY_OFFSET   0
#define ZEND_HOOKED_PROPERTY_OFFSET 1
 
/* guard flags */
#define IN_GET      ZEND_GUARD_PROPERTY_GET
#define IN_SET      ZEND_GUARD_PROPERTY_SET
#define IN_UNSET    ZEND_GUARD_PROPERTY_UNSET
#define IN_ISSET    ZEND_GUARD_PROPERTY_ISSET
#define IN_HOOK     ZEND_GUARD_PROPERTY_HOOK
 
static zend_always_inline bool zend_objects_check_stack_limit(void)
{
#ifdef ZEND_CHECK_STACK_LIMIT
    return zend_call_stack_overflowed(EG(stack_limit));
#else
    return false;
#endif
}
 
/*
  __X accessors explanation:
 
  if we have __get and property that is not part of the properties array is
  requested, we call __get handler. If it fails, we return uninitialized.
 
  if we have __set and property that is not part of the properties array is
  set, we call __set handler. If it fails, we do not change the array.
 
  for both handlers above, when we are inside __get/__set, no further calls for
  __get/__set for this property of this object will be made, to prevent endless
  recursion and enable accessors to change properties array.
 
  if we have __call and method which is not part of the class function table is
  called, we cal __call handler.
*/
 
ZEND_API HashTable *rebuild_object_properties_internal(zend_object *zobj) /* {{{ */
{
    if (!zobj->properties) {
        zend_property_info *prop_info;
        zend_class_entry *ce = zobj->ce;
        int i;
 
        zobj->properties = zend_new_array(ce->default_properties_count);
        if (ce->default_properties_count) {
            zend_hash_real_init_mixed(zobj->properties);
            for (i = 0; i < ce->default_properties_count; i++) {
                prop_info = ce->properties_info_table[i];
 
                if (!prop_info) {
                    continue;
                }
 
                if (UNEXPECTED(Z_TYPE_P(OBJ_PROP(zobj, prop_info->offset)) == IS_UNDEF)) {
                    HT_FLAGS(zobj->properties) |= HASH_FLAG_HAS_EMPTY_IND;
                }
 
                _zend_hash_append_ind(zobj->properties, prop_info->name,
                    OBJ_PROP(zobj, prop_info->offset));
            }
        }
    }
 
    return zobj->properties;
}
/* }}} */
 
/* Implements the fast path for array cast */
ZEND_API HashTable *zend_std_build_object_properties_array(zend_object *zobj) /* {{{ */
{
    zend_property_info *prop_info;
    zend_class_entry *ce = zobj->ce;
    HashTable *ht;
    zval* prop;
    int i;
 
    ZEND_ASSERT(!(zend_object_is_lazy_proxy(zobj) && zend_lazy_object_initialized(zobj)));
    ZEND_ASSERT(!zobj->properties);
    ht = zend_new_array(ce->default_properties_count);
    if (ce->default_properties_count) {
        zend_hash_real_init_mixed(ht);
        for (i = 0; i < ce->default_properties_count; i++) {
            prop_info = ce->properties_info_table[i];
 
            if (!prop_info) {
                continue;
            }
 
            prop = OBJ_PROP(zobj, prop_info->offset);
            if (UNEXPECTED(Z_TYPE_P(prop) == IS_UNDEF)) {
                continue;
            }
 
            if (Z_ISREF_P(prop) && Z_REFCOUNT_P(prop) == 1) {
                prop = Z_REFVAL_P(prop);
            }
 
            Z_TRY_ADDREF_P(prop);
            _zend_hash_append(ht, prop_info->name, prop);
        }
    }
    return ht;
}
/* }}} */
 
ZEND_API HashTable *zend_std_get_properties(zend_object *zobj) /* {{{ */
{
    return zend_std_get_properties_ex(zobj);
}
/* }}} */
 
/* Fetch properties HashTable without triggering lazy initialization */
ZEND_API HashTable *zend_get_properties_no_lazy_init(zend_object *zobj)
{
    if (zobj->handlers->get_properties == zend_std_get_properties) {
        if (UNEXPECTED(zend_object_is_lazy_proxy(zobj)
                && zend_lazy_object_initialized(zobj))) {
            zend_object *instance = zend_lazy_object_get_instance(zobj);
            return zend_get_properties_no_lazy_init(instance);
        }
 
        if (!zobj->properties) {
            rebuild_object_properties_internal(zobj);
        }
        return zobj->properties;
    }
 
    ZEND_ASSERT(!zend_object_is_lazy(zobj));
 
    return zobj->handlers->get_properties(zobj);
}
 
ZEND_API HashTable *zend_std_get_gc(zend_object *zobj, zval **table, int *n) /* {{{ */
{
    if (zobj->handlers->get_properties != zend_std_get_properties) {
        *table = NULL;
        *n = 0;
        return zobj->handlers->get_properties(zobj);
    } else {
        if (UNEXPECTED(zend_object_is_lazy(zobj))) {
            return zend_lazy_object_get_gc(zobj, table, n);
        } else if (zobj->properties) {
            *table = NULL;
            *n = 0;
            return zobj->properties;
        } else {
            *table = zobj->properties_table;
            *n = zobj->ce->default_properties_count;
            return NULL;
        }
    }
}
/* }}} */
 
ZEND_API HashTable *zend_std_get_debug_info(zend_object *object, int *is_temp) /* {{{ */
{
    zend_class_entry *ce = object->ce;
    zval retval;
    HashTable *ht;
 
    if (!ce->__debugInfo) {
        if (UNEXPECTED(zend_object_is_lazy(object))) {
            return zend_lazy_object_debug_info(object, is_temp);
        }
 
        *is_temp = 0;
        return object->handlers->get_properties(object);
    }
 
    zend_call_known_instance_method_with_0_params(ce->__debugInfo, object, &retval);
    if (Z_TYPE(retval) == IS_ARRAY) {
        if (!Z_REFCOUNTED(retval)) {
            *is_temp = 1;
            return zend_array_dup(Z_ARRVAL(retval));
        } else if (Z_REFCOUNT(retval) <= 1) {
            *is_temp = 1;
            ht = Z_ARR(retval);
            return ht;
        } else {
            *is_temp = 0;
            zval_ptr_dtor(&retval);
            return Z_ARRVAL(retval);
        }
    } else if (Z_TYPE(retval) == IS_NULL) {
        *is_temp = 1;
        ht = zend_new_array(0);
        return ht;
    }
 
    zend_error_noreturn(E_ERROR, ZEND_DEBUGINFO_FUNC_NAME "() must return an array");
 
    return NULL; /* Compilers are dumb and don't understand that noreturn means that the function does NOT need a return value... */
}
/* }}} */
 
static void zend_std_call_getter(zend_object *zobj, zend_string *prop_name, zval *retval) /* {{{ */
{
    zval member;
    ZVAL_STR(&member, prop_name);
    zend_call_known_instance_method_with_1_params(zobj->ce->__get, zobj, retval, &member);
}
/* }}} */
 
static void zend_std_call_setter(zend_object *zobj, zend_string *prop_name, zval *value) /* {{{ */
{
    zval args[2];
    ZVAL_STR(&args[0], prop_name);
    ZVAL_COPY_VALUE(&args[1], value);
    zend_call_known_instance_method(zobj->ce->__set, zobj, NULL, 2, args);
}
/* }}} */
 
static void zend_std_call_unsetter(zend_object *zobj, zend_string *prop_name) /* {{{ */
{
    zval member;
    ZVAL_STR(&member, prop_name);
    zend_call_known_instance_method_with_1_params(zobj->ce->__unset, zobj, NULL, &member);
}
/* }}} */
 
static void zend_std_call_issetter(zend_object *zobj, zend_string *prop_name, zval *retval) /* {{{ */
{
    zval member;
    ZVAL_STR(&member, prop_name);
    zend_call_known_instance_method_with_1_params(zobj->ce->__isset, zobj, retval, &member);
}
/* }}} */
 
 
static zend_always_inline bool is_derived_class(const zend_class_entry *child_class, const zend_class_entry *parent_class) /* {{{ */
{
    child_class = child_class->parent;
    while (child_class) {
        if (child_class == parent_class) {
            return 1;
        }
        child_class = child_class->parent;
    }
 
    return 0;
}
/* }}} */
 
static zend_never_inline int is_protected_compatible_scope(const zend_class_entry *ce, const zend_class_entry *scope) /* {{{ */
{
    return scope &&
        (is_derived_class(ce, scope) || is_derived_class(scope, ce));
}
/* }}} */
 
static zend_never_inline zend_property_info *zend_get_parent_private_property(zend_class_entry *scope, const zend_class_entry *ce, zend_string *member) /* {{{ */
{
    zval *zv;
    zend_property_info *prop_info;
 
    if (scope != ce && scope && is_derived_class(ce, scope)) {
        zv = zend_hash_find(&scope->properties_info, member);
        if (zv != NULL) {
            prop_info = (zend_property_info*)Z_PTR_P(zv);
            if ((prop_info->flags & ZEND_ACC_PRIVATE)
             && prop_info->ce == scope) {
                return prop_info;
            }
        }
    }
    return NULL;
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_bad_property_access(const zend_property_info *property_info, const zend_class_entry *ce, const zend_string *member) /* {{{ */
{
    zend_throw_error(NULL, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ZSTR_VAL(ce->name), ZSTR_VAL(member));
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_bad_property_name(void) /* {{{ */
{
    zend_throw_error(NULL, "Cannot access property starting with \"\\0\"");
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_forbidden_dynamic_property(
        const zend_class_entry *ce, const zend_string *member) {
    zend_throw_error(NULL, "Cannot create dynamic property %s::$%s",
        ZSTR_VAL(ce->name), ZSTR_VAL(member));
}
 
static ZEND_COLD zend_never_inline bool zend_deprecated_dynamic_property(
        zend_object *obj, const zend_string *member) {
    GC_ADDREF(obj);
    zend_error(E_DEPRECATED, "Creation of dynamic property %s::$%s is deprecated",
        ZSTR_VAL(obj->ce->name), ZSTR_VAL(member));
    if (UNEXPECTED(GC_DELREF(obj) == 0)) {
        zend_class_entry *ce = obj->ce;
        zend_objects_store_del(obj);
        if (!EG(exception)) {
            /* We cannot continue execution and have to throw an exception */
            zend_throw_error(NULL, "Cannot create dynamic property %s::$%s",
                ZSTR_VAL(ce->name), ZSTR_VAL(member));
        }
        return 0;
    }
    return 1;
}
 
static ZEND_COLD zend_never_inline void zend_readonly_property_unset_error(
        zend_class_entry *ce, zend_string *member) {
    zend_throw_error(NULL, "Cannot unset readonly property %s::$%s",
        ZSTR_VAL(ce->name), ZSTR_VAL(member));
}
 
static zend_always_inline zend_class_entry *get_fake_or_executed_scope(void)
{
    if (UNEXPECTED(EG(fake_scope))) {
        return EG(fake_scope);
    } else {
        return zend_get_executed_scope();
    }
}
 
static zend_always_inline uintptr_t zend_get_property_offset(zend_class_entry *ce, zend_string *member, int silent, void **cache_slot, const zend_property_info **info_ptr) /* {{{ */
{
    zval *zv;
    zend_property_info *property_info;
    uint32_t flags;
    uintptr_t offset;
 
    if (cache_slot && EXPECTED(ce == CACHED_PTR_EX(cache_slot))) {
        *info_ptr = CACHED_PTR_EX(cache_slot + 2);
        return (uintptr_t)CACHED_PTR_EX(cache_slot + 1);
    }
 
    if (UNEXPECTED(zend_hash_num_elements(&ce->properties_info) == 0)
     || UNEXPECTED((zv = zend_hash_find(&ce->properties_info, member)) == NULL)) {
        if (UNEXPECTED(ZSTR_VAL(member)[0] == '\0') && ZSTR_LEN(member) != 0) {
            if (!silent) {
                zend_bad_property_name();
            }
            return ZEND_WRONG_PROPERTY_OFFSET;
        }
dynamic:
        if (cache_slot) {
            CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, (void*)ZEND_DYNAMIC_PROPERTY_OFFSET);
            CACHE_PTR_EX(cache_slot + 2, NULL);
        }
        return ZEND_DYNAMIC_PROPERTY_OFFSET;
    }
 
    property_info = (zend_property_info*)Z_PTR_P(zv);
    flags = property_info->flags;
 
    if (flags & (ZEND_ACC_CHANGED|ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
        zend_class_entry *scope = get_fake_or_executed_scope();
 
        if (property_info->ce != scope) {
            if (flags & ZEND_ACC_CHANGED) {
                zend_property_info *p = zend_get_parent_private_property(scope, ce, member);
 
                /* If there is a public/protected instance property on ce, don't try to use a
                 * private static property on scope. If both are static, prefer the static
                 * property on scope. This will throw a static property notice, rather than
                 * a visibility error. */
                if (p && (!(p->flags & ZEND_ACC_STATIC) || (flags & ZEND_ACC_STATIC))) {
                    property_info = p;
                    flags = property_info->flags;
                    goto found;
                } else if (flags & ZEND_ACC_PUBLIC) {
                    goto found;
                }
            }
            if (flags & ZEND_ACC_PRIVATE) {
                if (property_info->ce != ce) {
                    goto dynamic;
                } else {
wrong:
                    /* Information was available, but we were denied access.  Error out. */
                    if (!silent) {
                        zend_bad_property_access(property_info, ce, member);
                    }
                    return ZEND_WRONG_PROPERTY_OFFSET;
                }
            } else {
                ZEND_ASSERT(flags & ZEND_ACC_PROTECTED);
                if (UNEXPECTED(!is_protected_compatible_scope(property_info->ce, scope))) {
                    goto wrong;
                }
            }
        }
    }
 
found:
    if (UNEXPECTED(flags & ZEND_ACC_STATIC)) {
        if (!silent) {
            zend_error(E_NOTICE, "Accessing static property %s::$%s as non static", ZSTR_VAL(ce->name), ZSTR_VAL(member));
        }
        return ZEND_DYNAMIC_PROPERTY_OFFSET;
    }
 
    if (property_info->hooks) {
        *info_ptr = property_info;
        if (cache_slot) {
            CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, (void*)ZEND_HOOKED_PROPERTY_OFFSET);
            CACHE_PTR_EX(cache_slot + 2, property_info);
        }
        return ZEND_HOOKED_PROPERTY_OFFSET;
    }
 
    offset = property_info->offset;
    if (EXPECTED(!ZEND_TYPE_IS_SET(property_info->type))) {
        property_info = NULL;
    } else {
        *info_ptr = property_info;
    }
    if (cache_slot) {
        CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, (void*)(uintptr_t)offset);
        CACHE_PTR_EX(cache_slot + 2, property_info);
    }
    return offset;
}
/* }}} */
 
static ZEND_COLD void zend_wrong_offset(zend_class_entry *ce, zend_string *member) /* {{{ */
{
    const zend_property_info *dummy;
 
    /* Trigger the correct error */
    zend_get_property_offset(ce, member, 0, NULL, &dummy);
}
/* }}} */
 
ZEND_API zend_property_info *zend_get_property_info(const zend_class_entry *ce, zend_string *member, int silent) /* {{{ */
{
    zval *zv;
    zend_property_info *property_info;
    uint32_t flags;
 
    if (UNEXPECTED(zend_hash_num_elements(&ce->properties_info) == 0)
     || EXPECTED((zv = zend_hash_find(&ce->properties_info, member)) == NULL)) {
        if (UNEXPECTED(ZSTR_VAL(member)[0] == '\0') && ZSTR_LEN(member) != 0) {
            if (!silent) {
                zend_bad_property_name();
            }
            return ZEND_WRONG_PROPERTY_INFO;
        }
dynamic:
        return NULL;
    }
 
    property_info = (zend_property_info*)Z_PTR_P(zv);
    flags = property_info->flags;
 
    if (flags & (ZEND_ACC_CHANGED|ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
        zend_class_entry *scope = get_fake_or_executed_scope();
        if (property_info->ce != scope) {
            if (flags & ZEND_ACC_CHANGED) {
                zend_property_info *p = zend_get_parent_private_property(scope, ce, member);
 
                if (p) {
                    property_info = p;
                    flags = property_info->flags;
                    goto found;
                } else if (flags & ZEND_ACC_PUBLIC) {
                    goto found;
                }
            }
            if (flags & ZEND_ACC_PRIVATE) {
                if (property_info->ce != ce) {
                    goto dynamic;
                } else {
wrong:
                    /* Information was available, but we were denied access.  Error out. */
                    if (!silent) {
                        zend_bad_property_access(property_info, ce, member);
                    }
                    return ZEND_WRONG_PROPERTY_INFO;
                }
            } else {
                ZEND_ASSERT(flags & ZEND_ACC_PROTECTED);
                if (UNEXPECTED(!is_protected_compatible_scope(property_info->ce, scope))) {
                    goto wrong;
                }
            }
        }
    }
 
found:
    if (UNEXPECTED(flags & ZEND_ACC_STATIC)) {
        if (!silent) {
            zend_error(E_NOTICE, "Accessing static property %s::$%s as non static", ZSTR_VAL(ce->name), ZSTR_VAL(member));
        }
    }
    return property_info;
}
/* }}} */
 
ZEND_API zend_result zend_check_property_access(const zend_object *zobj, zend_string *prop_info_name, bool is_dynamic) /* {{{ */
{
    zend_property_info *property_info;
    const char *class_name = NULL;
    const char *prop_name;
    zend_string *member;
    size_t prop_name_len;
 
    if (ZSTR_VAL(prop_info_name)[0] == 0) {
        if (is_dynamic) {
            return SUCCESS;
        }
 
        zend_unmangle_property_name_ex(prop_info_name, &class_name, &prop_name, &prop_name_len);
        member = zend_string_init(prop_name, prop_name_len, 0);
        property_info = zend_get_property_info(zobj->ce, member, 1);
        zend_string_release_ex(member, 0);
        if (property_info == NULL || property_info == ZEND_WRONG_PROPERTY_INFO) {
            return FAILURE;
        }
 
        if (class_name[0] != '*') {
            if (!(property_info->flags & ZEND_ACC_PRIVATE)) {
                /* we we're looking for a private prop but found a non private one of the same name */
                return FAILURE;
            } else if (strcmp(ZSTR_VAL(prop_info_name)+1, ZSTR_VAL(property_info->name)+1)) {
                /* we we're looking for a private prop but found a private one of the same name but another class */
                return FAILURE;
            }
        } else {
            ZEND_ASSERT(property_info->flags & ZEND_ACC_PROTECTED);
        }
        return SUCCESS;
    } else {
        property_info = zend_get_property_info(zobj->ce, prop_info_name, 1);
        if (property_info == NULL) {
            ZEND_ASSERT(is_dynamic);
            return SUCCESS;
        } else if (property_info == ZEND_WRONG_PROPERTY_INFO) {
            return FAILURE;
        }
        return (property_info->flags & ZEND_ACC_PUBLIC) ? SUCCESS : FAILURE;
    }
}
/* }}} */
 
ZEND_API bool ZEND_FASTCALL zend_asymmetric_property_has_set_access(const zend_property_info *prop_info) {
    ZEND_ASSERT(prop_info->flags & ZEND_ACC_PPP_SET_MASK);
    ZEND_ASSERT(!(prop_info->flags & ZEND_ACC_PUBLIC_SET));
    zend_class_entry *scope = get_fake_or_executed_scope();
    if (prop_info->ce == scope) {
        return true;
    }
    return EXPECTED((prop_info->flags & ZEND_ACC_PROTECTED_SET)
        && is_protected_compatible_scope(prop_info->ce, scope));
}
 
static void zend_property_guard_dtor(zval *el) /* {{{ */ {
    uint32_t *ptr = (uint32_t*)Z_PTR_P(el);
    if (EXPECTED(!(((uintptr_t)ptr) & 1))) {
        efree_size(ptr, sizeof(uint32_t));
    }
}
/* }}} */
 
static zend_always_inline zval *zend_get_guard_value(zend_object *zobj)
{
    return zobj->properties_table + zobj->ce->default_properties_count;
}
 
ZEND_API uint32_t *zend_get_property_guard(zend_object *zobj, zend_string *member) /* {{{ */
{
    HashTable *guards;
    zval *zv;
    uint32_t *ptr;
 
 
    ZEND_ASSERT(zobj->ce->ce_flags & ZEND_ACC_USE_GUARDS);
    zv = zend_get_guard_value(zobj);
    if (EXPECTED(Z_TYPE_P(zv) == IS_STRING)) {
        zend_string *str = Z_STR_P(zv);
        if (EXPECTED(str == member) ||
            /* str and member don't necessarily have a pre-calculated hash value here */
            EXPECTED(zend_string_equal_content(str, member))) {
            return &Z_GUARD_P(zv);
        } else if (EXPECTED(Z_GUARD_P(zv) == 0)) {
            zval_ptr_dtor_str(zv);
            ZVAL_STR_COPY(zv, member);
            return &Z_GUARD_P(zv);
        } else {
            ALLOC_HASHTABLE(guards);
            zend_hash_init(guards, 8, NULL, zend_property_guard_dtor, 0);
            /* mark pointer as "special" using low bit */
            zend_hash_add_new_ptr(guards, str,
                (void*)(((uintptr_t)&Z_GUARD_P(zv)) | 1));
            zval_ptr_dtor_str(zv);
            ZVAL_ARR(zv, guards);
        }
    } else if (EXPECTED(Z_TYPE_P(zv) == IS_ARRAY)) {
        guards = Z_ARRVAL_P(zv);
        ZEND_ASSERT(guards != NULL);
        zv = zend_hash_find(guards, member);
        if (zv != NULL) {
            return (uint32_t*)(((uintptr_t)Z_PTR_P(zv)) & ~1);
        }
    } else {
        ZEND_ASSERT(Z_TYPE_P(zv) == IS_UNDEF);
        ZVAL_STR_COPY(zv, member);
        Z_GUARD_P(zv) &= ~ZEND_GUARD_PROPERTY_MASK;
        return &Z_GUARD_P(zv);
    }
    /* we have to allocate uint32_t separately because ht->arData may be reallocated */
    ptr = (uint32_t*)emalloc(sizeof(uint32_t));
    *ptr = 0;
    return (uint32_t*)zend_hash_add_new_ptr(guards, member, ptr);
}
/* }}} */
 
ZEND_API uint32_t *zend_get_recursion_guard(zend_object *zobj)
{
    if (!(zobj->ce->ce_flags & ZEND_ACC_USE_GUARDS)) {
        return NULL;
    }
    zval *zv = zend_get_guard_value(zobj);
    return &Z_GUARD_P(zv);
}
 
ZEND_COLD static void zend_typed_property_uninitialized_access(const zend_property_info *prop_info, zend_string *name)
{
    zend_throw_error(NULL, "Typed property %s::$%s must not be accessed before initialization",
        ZSTR_VAL(prop_info->ce->name),
        ZSTR_VAL(name));
}
 
static ZEND_FUNCTION(zend_parent_hook_get_trampoline);
static ZEND_FUNCTION(zend_parent_hook_set_trampoline);
 
static bool zend_is_in_hook(const zend_property_info *prop_info)
{
    zend_execute_data *execute_data = EG(current_execute_data);
    if (!execute_data || !EX(func) || !EX(func)->common.prop_info) {
        return false;
    }
 
    const zend_property_info *parent_info = EX(func)->common.prop_info;
    ZEND_ASSERT(prop_info->prototype && parent_info->prototype);
    return prop_info->prototype == parent_info->prototype;
}
 
static bool zend_should_call_hook(const zend_property_info *prop_info, const zend_object *obj)
{
    if (!zend_is_in_hook(prop_info)) {
        return true;
    }
 
    /* execute_data and This are guaranteed to be set if zend_is_in_hook() returns true. */
    zend_object *parent_obj = Z_OBJ(EG(current_execute_data)->This);
    if (parent_obj == obj) {
        return false;
    }
 
    if (zend_object_is_lazy_proxy(parent_obj)
     && zend_lazy_object_initialized(parent_obj)
     && zend_lazy_object_get_instance(parent_obj) == obj) {
        return false;
    }
 
    return true;
}
 
static ZEND_COLD void zend_throw_no_prop_backing_value_access(zend_string *class_name, zend_string *prop_name, bool is_read)
{
    zend_throw_error(NULL, "Must not %s virtual property %s::$%s",
        is_read ? "read from" : "write to",
        ZSTR_VAL(class_name), ZSTR_VAL(prop_name));
}
 
static bool zend_call_get_hook(
    const zend_property_info *prop_info, zend_string *prop_name,
    zend_function *get, zend_object *zobj, zval *rv)
{
    if (!zend_should_call_hook(prop_info, zobj)) {
        if (UNEXPECTED(prop_info->flags & ZEND_ACC_VIRTUAL)) {
            zend_throw_no_prop_backing_value_access(zobj->ce->name, prop_name, /* is_read */ true);
        }
        return false;
    }
 
    zend_call_known_instance_method_with_0_params(get, zobj, rv);
 
    return true;
}
 
ZEND_API zval *zend_std_read_property(zend_object *zobj, zend_string *name, int type, void **cache_slot, zval *rv) /* {{{ */
{
    zval *retval;
    uintptr_t property_offset;
    const zend_property_info *prop_info = NULL;
    uint32_t *guard = NULL;
 
#if DEBUG_OBJECT_HANDLERS
    fprintf(stderr, "Read object #%d property: %s\n", zobj->handle, ZSTR_VAL(name));
#endif
 
    /* make zend_get_property_info silent if we have getter - we may want to use it */
    property_offset = zend_get_property_offset(zobj->ce, name, (type == BP_VAR_IS) || (zobj->ce->__get != NULL), cache_slot, &prop_info);
 
    if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
try_again:
        retval = OBJ_PROP(zobj, property_offset);
 
        if (prop_info && UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))
         && (type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)
         && ((prop_info->flags & ZEND_ACC_READONLY) || !zend_asymmetric_property_has_set_access(prop_info))) {
            if (Z_TYPE_P(retval) == IS_OBJECT) {
                /* For objects, W/RW/UNSET fetch modes might not actually modify object.
                 * Similar as with magic __get() allow them, but return the value as a copy
                 * to make sure no actual modification is possible. */
                ZVAL_COPY(rv, retval);
                retval = rv;
                goto exit;
            } else if (Z_TYPE_P(retval) == IS_UNDEF && type == BP_VAR_UNSET) {
                retval = &EG(uninitialized_zval);
                goto exit;
            }
            if (prop_info->flags & ZEND_ACC_READONLY) {
                zend_readonly_property_indirect_modification_error(prop_info);
            } else {
                zend_asymmetric_visibility_property_modification_error(prop_info, "indirectly modify");
            }
            retval = &EG(uninitialized_zval);
            goto exit;
        }
        if (EXPECTED(Z_TYPE_P(retval) != IS_UNDEF)) {
            goto exit;
        }
        if (UNEXPECTED(Z_PROP_FLAG_P(retval) & IS_PROP_UNINIT)) {
            /* Skip __get() for uninitialized typed properties */
            goto uninit_error;
        }
    } else if (EXPECTED(IS_DYNAMIC_PROPERTY_OFFSET(property_offset))) {
        if (EXPECTED(zobj->properties != NULL)) {
            if (!IS_UNKNOWN_DYNAMIC_PROPERTY_OFFSET(property_offset)) {
                uintptr_t idx = ZEND_DECODE_DYN_PROP_OFFSET(property_offset);
 
                if (EXPECTED(idx < zobj->properties->nNumUsed * sizeof(Bucket))) {
                    Bucket *p = (Bucket*)((char*)zobj->properties->arData + idx);
 
                    if (EXPECTED(p->key == name) ||
                        (EXPECTED(p->h == ZSTR_H(name)) &&
                         EXPECTED(p->key != NULL) &&
                         EXPECTED(zend_string_equal_content(p->key, name)))) {
                        retval = &p->val;
                        goto exit;
                    }
                }
                CACHE_PTR_EX(cache_slot + 1, (void*)ZEND_DYNAMIC_PROPERTY_OFFSET);
            }
            retval = zend_hash_find(zobj->properties, name);
            if (EXPECTED(retval)) {
                if (cache_slot) {
                    uintptr_t idx = (char*)retval - (char*)zobj->properties->arData;
                    CACHE_PTR_EX(cache_slot + 1, (void*)ZEND_ENCODE_DYN_PROP_OFFSET(idx));
                }
                goto exit;
            }
        }
    } else if (IS_HOOKED_PROPERTY_OFFSET(property_offset)) {
        zend_function *get = prop_info->hooks[ZEND_PROPERTY_HOOK_GET];
        if (!get) {
            if (prop_info->flags & ZEND_ACC_VIRTUAL) {
                zend_throw_error(NULL, "Property %s::$%s is write-only",
                    ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                return &EG(uninitialized_zval);
            }
            /* Cache the fact that this hook has trivial read. This only applies to
             * BP_VAR_R and BP_VAR_IS fetches. */
            ZEND_SET_PROPERTY_HOOK_SIMPLE_READ(cache_slot);
 
            retval = OBJ_PROP(zobj, prop_info->offset);
            if (UNEXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) {
                /* As hooked properties can't be unset, the only way to end up with an undef
                 * value is via an uninitialized property. */
                ZEND_ASSERT(Z_PROP_FLAG_P(retval) & IS_PROP_UNINIT);
                goto uninit_error;
            }
 
            if (UNEXPECTED(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)) {
                if (UNEXPECTED(Z_TYPE_P(retval) != IS_OBJECT)) {
                    zend_throw_error(NULL, "Indirect modification of %s::$%s is not allowed",
                        ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                    goto exit;
                }
                ZVAL_COPY(rv, retval);
                retval = rv;
            }
            goto exit;
        }
 
        zend_class_entry *ce = zobj->ce;
 
        if (!zend_call_get_hook(prop_info, name, get, zobj, rv)) {
            if (EG(exception)) {
                return &EG(uninitialized_zval);
            }
 
            /* Reads from backing store can only occur in hooks, and hence will always remain simple. */
            zend_execute_data *execute_data = EG(current_execute_data);
            if (cache_slot && EX(opline) && EX(opline)->opcode == ZEND_FETCH_OBJ_R && EX(opline)->op1_type == IS_UNUSED) {
                ZEND_SET_PROPERTY_HOOK_SIMPLE_READ(cache_slot);
            }
 
            property_offset = prop_info->offset;
            if (!ZEND_TYPE_IS_SET(prop_info->type)) {
                prop_info = NULL;
            }
            goto try_again;
        }
 
        if (EXPECTED(cache_slot
         && zend_execute_ex == execute_ex
         && ce->default_object_handlers->read_property == zend_std_read_property
         && !ce->create_object
         && !zend_is_in_hook(prop_info)
         && !(prop_info->hooks[ZEND_PROPERTY_HOOK_GET]->common.fn_flags & ZEND_ACC_RETURN_REFERENCE))) {
            ZEND_SET_PROPERTY_HOOK_SIMPLE_GET(cache_slot);
        }
 
        if (Z_TYPE_P(rv) != IS_UNDEF) {
            retval = rv;
            if (!Z_ISREF_P(rv)
             && (type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)
             && UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
                zend_throw_error(NULL, "Indirect modification of %s::$%s is not allowed",
                    ZSTR_VAL(ce->name), ZSTR_VAL(name));
            }
        } else {
            retval = &EG(uninitialized_zval);
        }
 
        goto exit;
    } else if (UNEXPECTED(EG(exception))) {
        retval = &EG(uninitialized_zval);
        goto exit;
    }
 
    retval = &EG(uninitialized_zval);
 
    /* magic isset */
    if ((type == BP_VAR_IS) && zobj->ce->__isset) {
        zval tmp_result;
        guard = zend_get_property_guard(zobj, name);
 
        if (!((*guard) & IN_ISSET)) {
            GC_ADDREF(zobj);
            ZVAL_UNDEF(&tmp_result);
 
            *guard |= IN_ISSET;
            zend_std_call_issetter(zobj, name, &tmp_result);
            *guard &= ~IN_ISSET;
 
            if (!zend_is_true(&tmp_result)) {
                retval = &EG(uninitialized_zval);
                OBJ_RELEASE(zobj);
                zval_ptr_dtor(&tmp_result);
                goto exit;
            }
 
            zval_ptr_dtor(&tmp_result);
            if (zobj->ce->__get && !((*guard) & IN_GET)) {
                goto call_getter;
            }
            OBJ_RELEASE(zobj);
        } else if (zobj->ce->__get && !((*guard) & IN_GET)) {
            goto call_getter_addref;
        }
    } else if (zobj->ce->__get) {
        /* magic get */
        guard = zend_get_property_guard(zobj, name);
        if (!((*guard) & IN_GET)) {
            /* have getter - try with it! */
call_getter_addref:
            GC_ADDREF(zobj);
call_getter:
            *guard |= IN_GET; /* prevent circular getting */
            zend_std_call_getter(zobj, name, rv);
            *guard &= ~IN_GET;
 
            if (Z_TYPE_P(rv) != IS_UNDEF) {
                retval = rv;
                if (!Z_ISREF_P(rv) &&
                    (type == BP_VAR_W || type == BP_VAR_RW  || type == BP_VAR_UNSET)) {
                    if (UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
                        zend_error(E_NOTICE, "Indirect modification of overloaded property %s::$%s has no effect", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                    }
                }
            } else {
                retval = &EG(uninitialized_zval);
            }
 
            if (prop_info) {
                zend_verify_prop_assignable_by_ref_ex(prop_info, retval, (zobj->ce->__get->common.fn_flags & ZEND_ACC_STRICT_TYPES) != 0, ZEND_VERIFY_PROP_ASSIGNABLE_BY_REF_CONTEXT_MAGIC_GET);
            }
 
            OBJ_RELEASE(zobj);
            goto exit;
        } else if (UNEXPECTED(IS_WRONG_PROPERTY_OFFSET(property_offset))) {
            /* Trigger the correct error */
            zend_wrong_offset(zobj->ce, name);
            ZEND_ASSERT(EG(exception));
            retval = &EG(uninitialized_zval);
            goto exit;
        }
    }
 
uninit_error:
    if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
        if (!prop_info || (Z_PROP_FLAG_P(retval) & IS_PROP_LAZY)) {
            zobj = zend_lazy_object_init(zobj);
            if (!zobj) {
                retval = &EG(uninitialized_zval);
                goto exit;
            }
 
            if (UNEXPECTED(guard)) {
                uint32_t guard_type = (type == BP_VAR_IS) && zobj->ce->__isset
                    ? IN_ISSET : IN_GET;
                guard = zend_get_property_guard(zobj, name);
                if (!((*guard) & guard_type)) {
                    (*guard) |= guard_type;
                    retval = zend_std_read_property(zobj, name, type, cache_slot, rv);
                    (*guard) &= ~guard_type;
                    return retval;
                }
            }
 
            return zend_std_read_property(zobj, name, type, cache_slot, rv);
        }
    }
    if (type != BP_VAR_IS) {
        if (prop_info) {
            zend_typed_property_uninitialized_access(prop_info, name);
        } else {
            zend_error(E_WARNING, "Undefined property: %s::$%s", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
        }
    }
    retval = &EG(uninitialized_zval);
 
exit:
    return retval;
}
/* }}} */
 
static zend_always_inline bool property_uses_strict_types(void) {
    zend_execute_data *execute_data = EG(current_execute_data);
    return execute_data
        && execute_data->func
        && ZEND_CALL_USES_STRICT_TYPES(EG(current_execute_data));
}
 
static zval *forward_write_to_lazy_object(zend_object *zobj,
        zend_string *name, zval *value, void **cache_slot, bool guarded)
{
    zval *variable_ptr;
 
    /* backup value as it may change during initialization */
    zval backup;
    ZVAL_COPY(&backup, value);
 
    zend_object *instance = zend_lazy_object_init(zobj);
    if (UNEXPECTED(!instance)) {
        zval_ptr_dtor(&backup);
        return &EG(error_zval);
    }
 
    if (UNEXPECTED(guarded)) {
        uint32_t *guard = zend_get_property_guard(instance, name);
        if (!((*guard) & IN_SET)) {
            (*guard) |= IN_SET;
            variable_ptr = zend_std_write_property(instance, name, &backup, cache_slot);
            (*guard) &= ~IN_SET;
            goto exit;
        }
    }
 
    variable_ptr = zend_std_write_property(instance, name, &backup, cache_slot);
 
exit:
    zval_ptr_dtor(&backup);
 
    if (variable_ptr == &backup) {
        variable_ptr = value;
    }
 
    return variable_ptr;
}
 
ZEND_API zval *zend_std_write_property(zend_object *zobj, zend_string *name, zval *value, void **cache_slot) /* {{{ */
{
    zval *variable_ptr, tmp;
    uintptr_t property_offset;
    const zend_property_info *prop_info = NULL;
    uint32_t *guard = NULL;
    ZEND_ASSERT(!Z_ISREF_P(value));
 
    property_offset = zend_get_property_offset(zobj->ce, name, (zobj->ce->__set != NULL), cache_slot, &prop_info);
 
    if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
try_again:
        variable_ptr = OBJ_PROP(zobj, property_offset);
 
        if (prop_info && UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))) {
            bool error;
            if (Z_TYPE_P(variable_ptr) != IS_UNDEF || (Z_PROP_FLAG_P(variable_ptr) & IS_PROP_UNINIT) || !zobj->ce->__set) {
                error = true;
            } else {
                guard = zend_get_property_guard(zobj, name);
                error = (*guard) & IN_SET;
            }
            if (error) {
                if ((prop_info->flags & ZEND_ACC_READONLY)
                 && Z_TYPE_P(variable_ptr) != IS_UNDEF
                 && !(Z_PROP_FLAG_P(variable_ptr) & IS_PROP_REINITABLE)) {
                    zend_readonly_property_modification_error(prop_info);
                    variable_ptr = &EG(error_zval);
                    goto exit;
                }
                if ((prop_info->flags & ZEND_ACC_PPP_SET_MASK) && !zend_asymmetric_property_has_set_access(prop_info)) {
                    zend_asymmetric_visibility_property_modification_error(prop_info, "modify");
                    variable_ptr = &EG(error_zval);
                    goto exit;
                }
            }
        }
 
        if (Z_TYPE_P(variable_ptr) != IS_UNDEF) {
            Z_TRY_ADDREF_P(value);
 
            if (prop_info) {
typed_property:
                ZVAL_COPY_VALUE(&tmp, value);
                // Increase refcount to prevent object from being released in __toString()
                GC_ADDREF(zobj);
                bool type_matched = zend_verify_property_type(prop_info, &tmp, property_uses_strict_types());
                if (UNEXPECTED(GC_DELREF(zobj) == 0)) {
                    zend_object_released_while_assigning_to_property_error(prop_info);
                    zend_objects_store_del(zobj);
                    zval_ptr_dtor(&tmp);
                    variable_ptr = &EG(error_zval);
                    goto exit;
                }
                if (UNEXPECTED(!type_matched)) {
                    zval_ptr_dtor(&tmp);
                    variable_ptr = &EG(error_zval);
                    goto exit;
                }
                Z_PROP_FLAG_P(variable_ptr) &= ~(IS_PROP_UNINIT|IS_PROP_REINITABLE);
                value = &tmp;
            }
 
found:;
            zend_refcounted *garbage = NULL;
 
            variable_ptr = zend_assign_to_variable_ex(
                variable_ptr, value, IS_TMP_VAR, property_uses_strict_types(), &garbage);
 
            if (garbage) {
                if (GC_DELREF(garbage) == 0) {
                    zend_execute_data *execute_data = EG(current_execute_data);
                    // Assign to result variable before calling the destructor as it may release the object
                    if (execute_data
                     && EX(func)
                     && ZEND_USER_CODE(EX(func)->common.type)
                     && EX(opline)
                     && EX(opline)->opcode == ZEND_ASSIGN_OBJ
                     && EX(opline)->result_type) {
                        ZVAL_COPY_DEREF(EX_VAR(EX(opline)->result.var), variable_ptr);
                        variable_ptr = NULL;
                    }
                    rc_dtor_func(garbage);
                } else {
                    gc_check_possible_root_no_ref(garbage);
                }
            }
            goto exit;
        }
        if (Z_PROP_FLAG_P(variable_ptr) & IS_PROP_UNINIT) {
            if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
                if (Z_PROP_FLAG_P(variable_ptr) & IS_PROP_LAZY) {
                    goto lazy_init;
                }
            }
            /* Writes to uninitialized typed properties bypass __set(). */
            goto write_std_property;
        }
    } else if (EXPECTED(IS_DYNAMIC_PROPERTY_OFFSET(property_offset))) {
        if (EXPECTED(zobj->properties != NULL)) {
            if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
                if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
                    GC_DELREF(zobj->properties);
                }
                zobj->properties = zend_array_dup(zobj->properties);
            }
            if ((variable_ptr = zend_hash_find(zobj->properties, name)) != NULL) {
                Z_TRY_ADDREF_P(value);
                goto found;
            }
        }
    } else if (IS_HOOKED_PROPERTY_OFFSET(property_offset)) {
        zend_function *set = prop_info->hooks[ZEND_PROPERTY_HOOK_SET];
 
        if (!set) {
            if (prop_info->flags & ZEND_ACC_VIRTUAL) {
                zend_throw_error(NULL, "Property %s::$%s is read-only", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                variable_ptr = &EG(error_zval);
                goto exit;
            }
            ZEND_SET_PROPERTY_HOOK_SIMPLE_WRITE(cache_slot);
            property_offset = prop_info->offset;
            if (!ZEND_TYPE_IS_SET(prop_info->type)) {
                prop_info = NULL;
            }
            goto try_again;
        }
 
        if (!zend_should_call_hook(prop_info, zobj)) {
            if (prop_info->flags & ZEND_ACC_VIRTUAL) {
                zend_throw_no_prop_backing_value_access(zobj->ce->name, name, /* is_read */ false);
                variable_ptr = &EG(error_zval);
                goto exit;
            }
 
            /* Writes to backing store can only occur in hooks, and hence will always remain simple. */
            zend_execute_data *execute_data = EG(current_execute_data);
            if (cache_slot && EX(opline) && EX(opline)->opcode == ZEND_ASSIGN_OBJ && EX(opline)->op1_type == IS_UNUSED) {
                ZEND_SET_PROPERTY_HOOK_SIMPLE_WRITE(cache_slot);
            }
 
            property_offset = prop_info->offset;
            if (!ZEND_TYPE_IS_SET(prop_info->type)) {
                prop_info = NULL;
            }
            goto try_again;
        }
 
        if (UNEXPECTED(prop_info->flags & ZEND_ACC_PPP_SET_MASK
         && !zend_asymmetric_property_has_set_access(prop_info))) {
            zend_asymmetric_visibility_property_modification_error(prop_info, "modify");
            variable_ptr = &EG(error_zval);
            goto exit;
        }
 
        GC_ADDREF(zobj);
        zend_call_known_instance_method_with_1_params(set, zobj, NULL, value);
        OBJ_RELEASE(zobj);
 
        variable_ptr = value;
        goto exit;
    } else if (UNEXPECTED(EG(exception))) {
        variable_ptr = &EG(error_zval);
        goto exit;
    }
 
    /* magic set */
    if (zobj->ce->__set) {
        if (!guard) {
            guard = zend_get_property_guard(zobj, name);
        }
 
        if (!((*guard) & IN_SET)) {
            GC_ADDREF(zobj);
            (*guard) |= IN_SET; /* prevent circular setting */
            zend_std_call_setter(zobj, name, value);
            (*guard) &= ~IN_SET;
            OBJ_RELEASE(zobj);
            variable_ptr = value;
        } else if (EXPECTED(!IS_WRONG_PROPERTY_OFFSET(property_offset))) {
            if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
                return forward_write_to_lazy_object(zobj, name, value,
                        cache_slot, /* guarded */ true);
            }
 
            goto write_std_property;
        } else {
            /* Trigger the correct error */
            zend_wrong_offset(zobj->ce, name);
            ZEND_ASSERT(EG(exception));
            variable_ptr = &EG(error_zval);
            goto exit;
        }
    } else {
        ZEND_ASSERT(!IS_WRONG_PROPERTY_OFFSET(property_offset));
        if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
            goto lazy_init;
        }
write_std_property:
        if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
            variable_ptr = OBJ_PROP(zobj, property_offset);
 
            Z_TRY_ADDREF_P(value);
            if (prop_info) {
                goto typed_property;
            }
 
            ZVAL_COPY_VALUE(variable_ptr, value);
        } else {
            if (UNEXPECTED(zobj->ce->ce_flags & ZEND_ACC_NO_DYNAMIC_PROPERTIES)) {
                zend_forbidden_dynamic_property(zobj->ce, name);
                variable_ptr = &EG(error_zval);
                goto exit;
            }
            if (UNEXPECTED(!(zobj->ce->ce_flags & ZEND_ACC_ALLOW_DYNAMIC_PROPERTIES))) {
                if (UNEXPECTED(!zend_deprecated_dynamic_property(zobj, name))) {
                    variable_ptr = &EG(error_zval);
                    goto exit;
                }
            }
 
            Z_TRY_ADDREF_P(value);
            variable_ptr = zend_hash_add_new(zend_std_get_properties(zobj), name, value);
        }
    }
 
exit:
    return variable_ptr;
 
lazy_init:
    return forward_write_to_lazy_object(zobj, name, value, cache_slot,
            /* guarded */ false);
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_bad_array_access(zend_class_entry *ce) /* {{{ */
{
    zend_throw_error(NULL, "Cannot use object of type %s as array", ZSTR_VAL(ce->name));
}
/* }}} */
 
ZEND_API zval *zend_std_read_dimension(zend_object *object, zval *offset, int type, zval *rv) /* {{{ */
{
    zend_class_entry *ce = object->ce;
    zval tmp_offset;
 
    /* arrayaccess_funcs_ptr is set if (and only if) the class implements zend_ce_arrayaccess */
    zend_class_arrayaccess_funcs *funcs = ce->arrayaccess_funcs_ptr;
    if (EXPECTED(funcs)) {
        if (offset == NULL) {
            /* [] construct */
            ZVAL_NULL(&tmp_offset);
        } else {
            ZVAL_COPY_DEREF(&tmp_offset, offset);
        }
 
        GC_ADDREF(object);
        if (type == BP_VAR_IS) {
            zend_call_known_instance_method_with_1_params(funcs->zf_offsetexists, object, rv, &tmp_offset);
            if (UNEXPECTED(Z_ISUNDEF_P(rv))) {
                OBJ_RELEASE(object);
                zval_ptr_dtor(&tmp_offset);
                return NULL;
            }
            if (!i_zend_is_true(rv)) {
                OBJ_RELEASE(object);
                zval_ptr_dtor(&tmp_offset);
                zval_ptr_dtor(rv);
                return &EG(uninitialized_zval);
            }
            zval_ptr_dtor(rv);
        }
 
        zend_call_known_instance_method_with_1_params(funcs->zf_offsetget, object, rv, &tmp_offset);
 
        OBJ_RELEASE(object);
        zval_ptr_dtor(&tmp_offset);
 
        if (UNEXPECTED(Z_TYPE_P(rv) == IS_UNDEF)) {
            if (UNEXPECTED(!EG(exception))) {
                zend_throw_error(NULL, "Undefined offset for object of type %s used as array", ZSTR_VAL(ce->name));
            }
            return NULL;
        }
        return rv;
    } else {
        zend_bad_array_access(ce);
        return NULL;
    }
}
/* }}} */
 
ZEND_API void zend_std_write_dimension(zend_object *object, zval *offset, zval *value) /* {{{ */
{
    zend_class_entry *ce = object->ce;
    zval tmp_offset;
 
    zend_class_arrayaccess_funcs *funcs = ce->arrayaccess_funcs_ptr;
    if (EXPECTED(funcs)) {
        if (!offset) {
            ZVAL_NULL(&tmp_offset);
        } else {
            ZVAL_COPY_DEREF(&tmp_offset, offset);
        }
        GC_ADDREF(object);
        zend_call_known_instance_method_with_2_params(funcs->zf_offsetset, object, NULL, &tmp_offset, value);
        OBJ_RELEASE(object);
        zval_ptr_dtor(&tmp_offset);
    } else {
        zend_bad_array_access(ce);
    }
}
/* }}} */
 
// todo: make zend_std_has_dimension return bool as well
ZEND_API int zend_std_has_dimension(zend_object *object, zval *offset, int check_empty) /* {{{ */
{
    zend_class_entry *ce = object->ce;
    zval retval, tmp_offset;
    bool result;
 
    zend_class_arrayaccess_funcs *funcs = ce->arrayaccess_funcs_ptr;
    if (EXPECTED(funcs)) {
        ZVAL_COPY_DEREF(&tmp_offset, offset);
        GC_ADDREF(object);
        zend_call_known_instance_method_with_1_params(funcs->zf_offsetexists, object, &retval, &tmp_offset);
        result = i_zend_is_true(&retval);
        zval_ptr_dtor(&retval);
        if (check_empty && result && EXPECTED(!EG(exception))) {
            zend_call_known_instance_method_with_1_params(funcs->zf_offsetget, object, &retval, &tmp_offset);
            result = i_zend_is_true(&retval);
            zval_ptr_dtor(&retval);
        }
        OBJ_RELEASE(object);
        zval_ptr_dtor(&tmp_offset);
    } else {
        zend_bad_array_access(ce);
        return 0;
    }
 
    return result;
}
/* }}} */
 
ZEND_API zval *zend_std_get_property_ptr_ptr(zend_object *zobj, zend_string *name, int type, void **cache_slot) /* {{{ */
{
    zval *retval = NULL;
    uintptr_t property_offset;
    const zend_property_info *prop_info = NULL;
 
#if DEBUG_OBJECT_HANDLERS
    fprintf(stderr, "Ptr object #%d property: %s\n", zobj->handle, ZSTR_VAL(name));
#endif
 
    property_offset = zend_get_property_offset(zobj->ce, name, (zobj->ce->__get != NULL), cache_slot, &prop_info);
 
    if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
        retval = OBJ_PROP(zobj, property_offset);
        if (UNEXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) {
            if (EXPECTED(!zobj->ce->__get) ||
                UNEXPECTED((*zend_get_property_guard(zobj, name)) & IN_GET) ||
                UNEXPECTED(prop_info && (Z_PROP_FLAG_P(retval) & IS_PROP_UNINIT))) {
                if (UNEXPECTED(zend_lazy_object_must_init(zobj) && (Z_PROP_FLAG_P(retval) & IS_PROP_LAZY))) {
                    zobj = zend_lazy_object_init(zobj);
                    if (!zobj) {
                        return &EG(error_zval);
                    }
 
                    return zend_std_get_property_ptr_ptr(zobj, name, type, cache_slot);
                }
                if (UNEXPECTED(type == BP_VAR_RW || type == BP_VAR_R)) {
                    if (prop_info) {
                        zend_typed_property_uninitialized_access(prop_info, name);
                        retval = &EG(error_zval);
                    } else {
                        zend_error(E_WARNING, "Undefined property: %s::$%s", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                        /* An error handler may set the property */
                         if (EXPECTED(Z_TYPE_P(retval) == IS_UNDEF)) {
                            ZVAL_NULL(retval);
                         }
                    }
                } else if (prop_info && UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))) {
                    if ((prop_info->flags & ZEND_ACC_READONLY) || !zend_asymmetric_property_has_set_access(prop_info)) {
                        retval = NULL;
                    }
                } else if (!prop_info || !ZEND_TYPE_IS_SET(prop_info->type)) {
                    ZVAL_NULL(retval);
                }
            } else {
                /* we do have getter - fail and let it try again with usual get/set */
                retval = NULL;
            }
        } else if (prop_info && UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))) {
            if ((prop_info->flags & ZEND_ACC_READONLY) || !zend_asymmetric_property_has_set_access(prop_info)) {
                retval = NULL;
            }
        }
    } else if (EXPECTED(IS_DYNAMIC_PROPERTY_OFFSET(property_offset))) {
        if (EXPECTED(zobj->properties)) {
            if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
                if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
                    GC_DELREF(zobj->properties);
                }
                zobj->properties = zend_array_dup(zobj->properties);
            }
            if (EXPECTED((retval = zend_hash_find(zobj->properties, name)) != NULL)) {
                return retval;
            }
        }
        if (EXPECTED(!zobj->ce->__get) ||
            UNEXPECTED((*zend_get_property_guard(zobj, name)) & IN_GET)) {
            if (UNEXPECTED(zobj->ce->ce_flags & ZEND_ACC_NO_DYNAMIC_PROPERTIES)) {
                zend_forbidden_dynamic_property(zobj->ce, name);
                return &EG(error_zval);
            }
            if (UNEXPECTED(!(zobj->ce->ce_flags & ZEND_ACC_ALLOW_DYNAMIC_PROPERTIES))) {
                if (UNEXPECTED(!zend_deprecated_dynamic_property(zobj, name))) {
                    return &EG(error_zval);
                }
            }
            if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
                zobj = zend_lazy_object_init(zobj);
                if (!zobj) {
                    return &EG(error_zval);
                }
 
                return zend_std_get_property_ptr_ptr(zobj, name, type, cache_slot);
            }
            if (UNEXPECTED(!zobj->properties)) {
                rebuild_object_properties_internal(zobj);
            }
            if (UNEXPECTED(type == BP_VAR_RW || type == BP_VAR_R)) {
                zend_error(E_WARNING, "Undefined property: %s::$%s", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
            }
            retval = zend_hash_add(zobj->properties, name, &EG(uninitialized_zval));
        }
    } else if (!IS_HOOKED_PROPERTY_OFFSET(property_offset) && zobj->ce->__get == NULL) {
        retval = &EG(error_zval);
    }
 
    return retval;
}
/* }}} */
 
ZEND_API void zend_std_unset_property(zend_object *zobj, zend_string *name, void **cache_slot) /* {{{ */
{
    uintptr_t property_offset;
    const zend_property_info *prop_info = NULL;
    uint32_t *guard = NULL;
 
    property_offset = zend_get_property_offset(zobj->ce, name, (zobj->ce->__unset != NULL), cache_slot, &prop_info);
 
    if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
        zval *slot = OBJ_PROP(zobj, property_offset);
 
        if (prop_info && UNEXPECTED(prop_info->flags & (ZEND_ACC_READONLY|ZEND_ACC_PPP_SET_MASK))) {
            bool error;
            if (Z_TYPE_P(slot) != IS_UNDEF || Z_PROP_FLAG_P(slot) & IS_PROP_UNINIT || !zobj->ce->__unset) {
                error = true;
            } else {
                guard = zend_get_property_guard(zobj, name);
                error = (*guard) & IN_UNSET;
            }
            if (error) {
                if ((prop_info->flags & ZEND_ACC_READONLY)
                 && Z_TYPE_P(slot) != IS_UNDEF
                 && !(Z_PROP_FLAG_P(slot) & IS_PROP_REINITABLE)) {
                    zend_readonly_property_unset_error(prop_info->ce, name);
                    return;
                }
                if ((prop_info->flags & ZEND_ACC_PPP_SET_MASK) && !zend_asymmetric_property_has_set_access(prop_info)) {
                    zend_asymmetric_visibility_property_modification_error(prop_info, "unset");
                    return;
                }
            }
        }
 
        if (Z_TYPE_P(slot) != IS_UNDEF) {
            if (UNEXPECTED(Z_ISREF_P(slot)) &&
                    (ZEND_DEBUG || ZEND_REF_HAS_TYPE_SOURCES(Z_REF_P(slot)))) {
                if (prop_info) {
                    ZEND_REF_DEL_TYPE_SOURCE(Z_REF_P(slot), prop_info);
                }
            }
            zval tmp;
            ZVAL_COPY_VALUE(&tmp, slot);
            ZVAL_UNDEF(slot);
            zval_ptr_dtor(&tmp);
            if (zobj->properties) {
                HT_FLAGS(zobj->properties) |= HASH_FLAG_HAS_EMPTY_IND;
            }
            return;
        }
        if (UNEXPECTED(Z_PROP_FLAG_P(slot) & IS_PROP_UNINIT)) {
            if (UNEXPECTED(zend_lazy_object_must_init(zobj) && (Z_PROP_FLAG_P(slot) & IS_PROP_LAZY))) {
                zobj = zend_lazy_object_init(zobj);
                if (!zobj) {
                    return;
                }
                zend_std_unset_property(zobj, name, cache_slot);
                return;
            }
 
            /* Reset the IS_PROP_UNINIT flag, if it exists and bypass __unset(). */
            Z_PROP_FLAG_P(slot) = 0;
            return;
        }
    } else if (EXPECTED(IS_DYNAMIC_PROPERTY_OFFSET(property_offset))
     && EXPECTED(zobj->properties != NULL)) {
        if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
            if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
                GC_DELREF(zobj->properties);
            }
            zobj->properties = zend_array_dup(zobj->properties);
        }
        if (EXPECTED(zend_hash_del(zobj->properties, name) != FAILURE)) {
            return;
        }
    } else if (IS_HOOKED_PROPERTY_OFFSET(property_offset)) {
        zend_throw_error(NULL, "Cannot unset hooked property %s::$%s",
            ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
        return;
    } else if (UNEXPECTED(EG(exception))) {
        return;
    }
 
    /* magic unset */
    if (zobj->ce->__unset) {
        if (!guard) {
            guard = zend_get_property_guard(zobj, name);
        }
        if (!((*guard) & IN_UNSET)) {
            /* have unsetter - try with it! */
            (*guard) |= IN_UNSET; /* prevent circular unsetting */
            zend_std_call_unsetter(zobj, name);
            (*guard) &= ~IN_UNSET;
            return;
        } else if (UNEXPECTED(IS_WRONG_PROPERTY_OFFSET(property_offset))) {
            /* Trigger the correct error */
            zend_wrong_offset(zobj->ce, name);
            ZEND_ASSERT(EG(exception));
            return;
        } else {
            /* Nothing to do: The property already does not exist. */
        }
    }
 
    if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
        zobj = zend_lazy_object_init(zobj);
        if (!zobj) {
            return;
        }
 
        if (UNEXPECTED(guard)) {
            guard = zend_get_property_guard(zobj, name);
            if (!((*guard) & IN_UNSET)) {
                (*guard) |= IN_UNSET;
                zend_std_unset_property(zobj, name, cache_slot);
                (*guard) &= ~IN_UNSET;
                return;
            }
        }
 
        zend_std_unset_property(zobj, name, cache_slot);
        return;
    }
}
/* }}} */
 
ZEND_API void zend_std_unset_dimension(zend_object *object, zval *offset) /* {{{ */
{
    zend_class_entry *ce = object->ce;
    zval tmp_offset;
 
    zend_class_arrayaccess_funcs *funcs = ce->arrayaccess_funcs_ptr;
    if (EXPECTED(funcs)) {
        ZVAL_COPY_DEREF(&tmp_offset, offset);
        GC_ADDREF(object);
        zend_call_known_instance_method_with_1_params(funcs->zf_offsetunset, object, NULL, &tmp_offset);
        OBJ_RELEASE(object);
        zval_ptr_dtor(&tmp_offset);
    } else {
        zend_bad_array_access(ce);
    }
}
/* }}} */
 
static zend_never_inline zend_function *zend_get_parent_private_method(zend_class_entry *scope, zend_class_entry *ce, zend_string *function_name) /* {{{ */
{
    zval *func;
    zend_function *fbc;
 
    if (scope != ce && scope && is_derived_class(ce, scope)) {
        func = zend_hash_find(&scope->function_table, function_name);
        if (func != NULL) {
            fbc = Z_FUNC_P(func);
            if ((fbc->common.fn_flags & ZEND_ACC_PRIVATE)
             && fbc->common.scope == scope) {
                return fbc;
            }
        }
    }
    return NULL;
}
/* }}} */
 
/* Ensures that we're allowed to call a protected method.
 */
ZEND_API bool zend_check_protected(const zend_class_entry *ce, const zend_class_entry *scope) /* {{{ */
{
    const zend_class_entry *fbc_scope = ce;
 
    /* Is the context that's calling the function, the same as one of
     * the function's parents?
     */
    while (fbc_scope) {
        if (fbc_scope==scope) {
            return 1;
        }
        fbc_scope = fbc_scope->parent;
    }
 
    /* Is the function's scope the same as our current object context,
     * or any of the parents of our context?
     */
    while (scope) {
        if (scope==ce) {
            return 1;
        }
        scope = scope->parent;
    }
    return 0;
}
/* }}} */
 
ZEND_API zend_function *zend_get_call_trampoline_func(const zend_class_entry *ce, zend_string *method_name, bool is_static) /* {{{ */
{
    size_t mname_len;
    zend_op_array *func;
    zend_function *fbc = is_static ? ce->__callstatic : ce->__call;
    /* We use non-NULL value to avoid useless run_time_cache allocation.
     * The low bit must be zero, to not be interpreted as a MAP_PTR offset.
     */
    static const void *dummy = (void*)(intptr_t)2;
    static const zend_arg_info arg_info[1] = {{0}};
 
    ZEND_ASSERT(fbc);
 
    if (EXPECTED(EG(trampoline).common.function_name == NULL)) {
        func = &EG(trampoline).op_array;
    } else {
        func = ecalloc(1, sizeof(zend_op_array));
    }
 
    func->type = ZEND_USER_FUNCTION;
    func->arg_flags[0] = 0;
    func->arg_flags[1] = 0;
    func->arg_flags[2] = 0;
    func->fn_flags = ZEND_ACC_CALL_VIA_TRAMPOLINE
        | ZEND_ACC_PUBLIC
        | ZEND_ACC_VARIADIC
        | (fbc->common.fn_flags & (ZEND_ACC_RETURN_REFERENCE|ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED));
    /* Attributes outlive the trampoline because they are created by the compiler. */
    func->attributes = fbc->common.attributes;
    if (is_static) {
        func->fn_flags |= ZEND_ACC_STATIC;
    }
    func->opcodes = &EG(call_trampoline_op);
    ZEND_MAP_PTR_INIT(func->run_time_cache, (void**)dummy);
    func->scope = fbc->common.scope;
    /* reserve space for arguments, local and temporary variables */
    /* EG(trampoline) is reused from other places, like FFI (e.g. zend_ffi_cdata_get_closure()) where
     * it is used as an internal function. It may set fields that don't belong to common, thus
     * modifying zend_op_array specific data, most significantly last_var. We need to reset this
     * value so that it doesn't contain garbage when the engine allocates space for the next stack
     * frame. This didn't cause any issues until now due to "lucky" structure layout. */
    func->last_var = 0;
    uint32_t min_T = 2 + ZEND_OBSERVER_ENABLED;
    func->T = (fbc->type == ZEND_USER_FUNCTION)? MAX(fbc->op_array.last_var + fbc->op_array.T, min_T) : min_T;
    func->filename = (fbc->type == ZEND_USER_FUNCTION)? fbc->op_array.filename : ZSTR_EMPTY_ALLOC();
    func->line_start = (fbc->type == ZEND_USER_FUNCTION)? fbc->op_array.line_start : 0;
    func->line_end = (fbc->type == ZEND_USER_FUNCTION)? fbc->op_array.line_end : 0;
 
    //??? keep compatibility for "\0" characters
    //??? see: Zend/tests/bug46238.phpt
    if (UNEXPECTED((mname_len = strlen(ZSTR_VAL(method_name))) != ZSTR_LEN(method_name))) {
        func->function_name = zend_string_init(ZSTR_VAL(method_name), mname_len, 0);
    } else {
        func->function_name = zend_string_copy(method_name);
    }
 
    func->prototype = NULL;
    func->prop_info = NULL;
    func->num_args = 0;
    func->required_num_args = 0;
    func->arg_info = (zend_arg_info *) arg_info;
 
    return (zend_function*)func;
}
/* }}} */
 
static ZEND_FUNCTION(zend_parent_hook_get_trampoline)
{
    zend_object *obj = Z_PTR_P(ZEND_THIS);
    zend_string *prop_name = EX(func)->internal_function.reserved[0];
 
    if (UNEXPECTED(ZEND_NUM_ARGS() != 0)) {
        zend_wrong_parameters_none_error();
        goto clean;
    }
 
    zval rv;
    zval *retval = obj->handlers->read_property(obj, prop_name, BP_VAR_R, NULL, &rv);
    if (retval == &rv) {
        RETVAL_COPY_VALUE(retval);
    } else {
        RETVAL_COPY(retval);
    }
 
clean:
    zend_string_release(EX(func)->common.function_name);
    zend_free_trampoline(EX(func));
    EX(func) = NULL;
}
 
static ZEND_FUNCTION(zend_parent_hook_set_trampoline)
{
    zend_object *obj = Z_PTR_P(ZEND_THIS);
    zend_string *prop_name = EX(func)->internal_function.reserved[0];
 
    zval *value;
 
    ZEND_PARSE_PARAMETERS_START(1, 1)
        Z_PARAM_ZVAL(value)
    ZEND_PARSE_PARAMETERS_END_EX(goto clean);
 
    RETVAL_COPY(obj->handlers->write_property(obj, prop_name, value, NULL));
 
clean:
    zend_string_release(EX(func)->common.function_name);
    zend_free_trampoline(EX(func));
    EX(func) = NULL;
}
 
ZEND_API zend_function *zend_get_property_hook_trampoline(
    const zend_property_info *prop_info,
    zend_property_hook_kind kind, zend_string *prop_name)
{
    static const zend_arg_info arg_info[1] = {{0}};
    zend_function *func;
    if (EXPECTED(EG(trampoline).common.function_name == NULL)) {
        func = &EG(trampoline);
    } else {
        func = (zend_function *)(uintptr_t)ecalloc(1, sizeof(zend_internal_function));
    }
    func->type = ZEND_INTERNAL_FUNCTION;
    func->common.arg_flags[0] = 0;
    func->common.arg_flags[1] = 0;
    func->common.arg_flags[2] = 0;
    func->common.fn_flags = ZEND_ACC_CALL_VIA_TRAMPOLINE;
    func->common.function_name = zend_string_concat3(
        "$", 1, ZSTR_VAL(prop_name), ZSTR_LEN(prop_name),
        kind == ZEND_PROPERTY_HOOK_GET ? "::get" : "::set", 5);
    /* set to 0 to avoid arg_info[] allocation, because all values are passed by value anyway */
    uint32_t args = kind == ZEND_PROPERTY_HOOK_GET ? 0 : 1;
    func->common.num_args = args;
    func->common.required_num_args = args;
    func->common.scope = prop_info->ce;
    func->common.prototype = NULL;
    func->common.prop_info = prop_info;
    func->common.arg_info = (zend_arg_info *) arg_info;
    func->internal_function.handler = kind == ZEND_PROPERTY_HOOK_GET
        ? ZEND_FN(zend_parent_hook_get_trampoline)
        : ZEND_FN(zend_parent_hook_set_trampoline);
    func->internal_function.module = NULL;
 
    func->internal_function.reserved[0] = prop_name;
    func->internal_function.reserved[1] = NULL;
 
    return func;
}
 
static zend_always_inline zend_function *zend_get_user_call_function(zend_class_entry *ce, zend_string *method_name) /* {{{ */
{
    return zend_get_call_trampoline_func(ce, method_name, 0);
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_bad_method_call(zend_function *fbc, zend_string *method_name, zend_class_entry *scope) /* {{{ */
{
    zend_throw_error(NULL, "Call to %s method %s::%s() from %s%s",
        zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), ZSTR_VAL(method_name),
        scope ? "scope " : "global scope",
        scope ? ZSTR_VAL(scope->name) : ""
    );
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_abstract_method_call(zend_function *fbc) /* {{{ */
{
    zend_throw_error(NULL, "Cannot call abstract method %s::%s()",
        ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
}
/* }}} */
 
ZEND_API zend_function *zend_std_get_method(zend_object **obj_ptr, zend_string *method_name, const zval *key) /* {{{ */
{
    zend_object *zobj = *obj_ptr;
    zval *func;
    zend_function *fbc;
    zend_string *lc_method_name;
    zend_class_entry *scope;
    ALLOCA_FLAG(use_heap);
 
    if (EXPECTED(key != NULL)) {
        lc_method_name = Z_STR_P(key);
#ifdef ZEND_ALLOCA_MAX_SIZE
        use_heap = 0;
#endif
    } else {
        ZSTR_ALLOCA_ALLOC(lc_method_name, ZSTR_LEN(method_name), use_heap);
        zend_str_tolower_copy(ZSTR_VAL(lc_method_name), ZSTR_VAL(method_name), ZSTR_LEN(method_name));
    }
 
    if (UNEXPECTED((func = zend_hash_find(&zobj->ce->function_table, lc_method_name)) == NULL)) {
        if (UNEXPECTED(!key)) {
            ZSTR_ALLOCA_FREE(lc_method_name, use_heap);
        }
        if (zobj->ce->__call) {
            return zend_get_user_call_function(zobj->ce, method_name);
        } else {
            return NULL;
        }
    }
 
    fbc = Z_FUNC_P(func);
 
    /* Check access level */
    if (fbc->op_array.fn_flags & (ZEND_ACC_CHANGED|ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
        scope = zend_get_executed_scope();
 
        if (fbc->common.scope != scope) {
            if (fbc->op_array.fn_flags & ZEND_ACC_CHANGED) {
                zend_function *updated_fbc = zend_get_parent_private_method(scope, zobj->ce, lc_method_name);
 
                if (EXPECTED(updated_fbc != NULL)) {
                    fbc = updated_fbc;
                    goto exit;
                } else if (fbc->op_array.fn_flags & ZEND_ACC_PUBLIC) {
                    goto exit;
                }
            }
            if (UNEXPECTED(fbc->op_array.fn_flags & ZEND_ACC_PRIVATE)
             || UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), scope))) {
                if (zobj->ce->__call) {
                    fbc = zend_get_user_call_function(zobj->ce, method_name);
                } else {
                    zend_bad_method_call(fbc, method_name, scope);
                    fbc = NULL;
                }
            }
        }
    }
 
exit:
    if (fbc && UNEXPECTED(fbc->common.fn_flags & ZEND_ACC_ABSTRACT)) {
        zend_abstract_method_call(fbc);
        fbc = NULL;
    }
    if (UNEXPECTED(!key)) {
        ZSTR_ALLOCA_FREE(lc_method_name, use_heap);
    }
    return fbc;
}
/* }}} */
 
static zend_always_inline zend_function *zend_get_user_callstatic_function(zend_class_entry *ce, zend_string *method_name) /* {{{ */
{
    return zend_get_call_trampoline_func(ce, method_name, 1);
}
/* }}} */
 
static zend_always_inline zend_function *get_static_method_fallback(
        zend_class_entry *ce, zend_string *function_name)
{
    zend_object *object;
    if (ce->__call &&
        (object = zend_get_this_object(EG(current_execute_data))) != NULL &&
        instanceof_function(object->ce, ce)) {
        /* Call the top-level defined __call().
         * see: tests/classes/__call_004.phpt  */
 
        ZEND_ASSERT(object->ce->__call);
        return zend_get_user_call_function(object->ce, function_name);
    } else if (ce->__callstatic) {
        return zend_get_user_callstatic_function(ce, function_name);
    } else {
        return NULL;
    }
}
 
ZEND_API zend_function *zend_std_get_static_method(zend_class_entry *ce, zend_string *function_name, const zval *key) /* {{{ */
{
    zend_string *lc_function_name;
    if (EXPECTED(key != NULL)) {
        lc_function_name = Z_STR_P(key);
    } else {
        lc_function_name = zend_string_tolower(function_name);
    }
 
    zend_function *fbc;
    zval *func = zend_hash_find(&ce->function_table, lc_function_name);
    if (EXPECTED(func)) {
        fbc = Z_FUNC_P(func);
        if (!(fbc->op_array.fn_flags & ZEND_ACC_PUBLIC)) {
            zend_class_entry *scope = zend_get_executed_scope();
            if (UNEXPECTED(fbc->common.scope != scope)) {
                if (UNEXPECTED(fbc->op_array.fn_flags & ZEND_ACC_PRIVATE)
                 || UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), scope))) {
                    zend_function *fallback_fbc = get_static_method_fallback(ce, function_name);
                    if (!fallback_fbc) {
                        zend_bad_method_call(fbc, function_name, scope);
                    }
                    fbc = fallback_fbc;
                }
            }
        }
    } else {
        fbc = get_static_method_fallback(ce, function_name);
    }
 
    if (UNEXPECTED(!key)) {
        zend_string_release_ex(lc_function_name, 0);
    }
 
    if (EXPECTED(fbc)) {
        if (UNEXPECTED(fbc->common.fn_flags & ZEND_ACC_ABSTRACT)) {
            zend_abstract_method_call(fbc);
            goto fail;
        } else if (UNEXPECTED(fbc->common.scope->ce_flags & ZEND_ACC_TRAIT)) {
            zend_error(E_DEPRECATED,
                "Calling static trait method %s::%s is deprecated, "
                "it should only be called on a class using the trait",
                ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
            if (EG(exception)) {
                goto fail;
            }
        }
    }
 
    return fbc;
 
 fail:
    if (UNEXPECTED(fbc->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE)) {
        zend_string_release_ex(fbc->common.function_name, 0);
        zend_free_trampoline(fbc);
    }
 
    return NULL;
}
/* }}} */
 
ZEND_API void zend_class_init_statics(zend_class_entry *class_type) /* {{{ */
{
    int i;
    zval *p;
 
    if (class_type->default_static_members_count && !CE_STATIC_MEMBERS(class_type)) {
        if (class_type->parent) {
            zend_class_init_statics(class_type->parent);
        }
 
        ZEND_MAP_PTR_SET(class_type->static_members_table, emalloc(sizeof(zval) * class_type->default_static_members_count));
        for (i = 0; i < class_type->default_static_members_count; i++) {
            p = &class_type->default_static_members_table[i];
            if (Z_TYPE_P(p) == IS_INDIRECT) {
                zval *q = &CE_STATIC_MEMBERS(class_type->parent)[i];
                ZVAL_DEINDIRECT(q);
                ZVAL_INDIRECT(&CE_STATIC_MEMBERS(class_type)[i], q);
            } else {
                ZVAL_COPY_OR_DUP(&CE_STATIC_MEMBERS(class_type)[i], p);
            }
        }
    }
} /* }}} */
 
ZEND_API zval *zend_std_get_static_property_with_info(zend_class_entry *ce, zend_string *property_name, int type, zend_property_info **property_info_ptr) /* {{{ */
{
    zval *ret;
    zend_property_info *property_info = zend_hash_find_ptr(&ce->properties_info, property_name);
    *property_info_ptr = property_info;
 
    if (UNEXPECTED(property_info == NULL)) {
        goto undeclared_property;
    }
 
    if (!(property_info->flags & ZEND_ACC_PUBLIC)) {
        zend_class_entry *scope = get_fake_or_executed_scope();
        if (property_info->ce != scope) {
            if (UNEXPECTED(property_info->flags & ZEND_ACC_PRIVATE)
             || UNEXPECTED(!is_protected_compatible_scope(property_info->ce, scope))) {
                if (type != BP_VAR_IS) {
                    zend_bad_property_access(property_info, ce, property_name);
                }
                return NULL;
            }
        }
    }
 
    if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0)) {
undeclared_property:
        if (type != BP_VAR_IS) {
            zend_throw_error(NULL, "Access to undeclared static property %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(property_name));
        }
        return NULL;
    }
 
    if (UNEXPECTED(!(ce->ce_flags & ZEND_ACC_CONSTANTS_UPDATED))) {
        if (UNEXPECTED(zend_update_class_constants(ce) != SUCCESS)) {
            return NULL;
        }
    }
 
    /* Ensure static properties are initialized. */
    if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
        zend_class_init_statics(ce);
    }
 
    ret = CE_STATIC_MEMBERS(ce) + property_info->offset;
    ZVAL_DEINDIRECT(ret);
 
    if (UNEXPECTED((type == BP_VAR_R || type == BP_VAR_RW)
                && Z_TYPE_P(ret) == IS_UNDEF && ZEND_TYPE_IS_SET(property_info->type))) {
        zend_throw_error(NULL, "Typed static property %s::$%s must not be accessed before initialization",
            ZSTR_VAL(property_info->ce->name), ZSTR_VAL(property_name));
        return NULL;
    }
 
    if (UNEXPECTED(ce->ce_flags & ZEND_ACC_TRAIT)) {
        zend_error(E_DEPRECATED,
            "Accessing static trait property %s::$%s is deprecated, "
            "it should only be accessed on a class using the trait",
            ZSTR_VAL(property_info->ce->name), ZSTR_VAL(property_name));
    }
 
    return ret;
}
/* }}} */
 
ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *property_name, int type) /* {{{ */
{
    zend_property_info *prop_info;
    return zend_std_get_static_property_with_info(ce, property_name, type, &prop_info);
}
 
ZEND_API ZEND_COLD bool zend_std_unset_static_property(zend_class_entry *ce, zend_string *property_name) /* {{{ */
{
    zend_throw_error(NULL, "Attempt to unset static property %s::$%s", ZSTR_VAL(ce->name), ZSTR_VAL(property_name));
    return 0;
}
/* }}} */
 
static ZEND_COLD zend_never_inline void zend_bad_constructor_call(zend_function *constructor, zend_class_entry *scope) /* {{{ */
{
    if (scope) {
        zend_throw_error(NULL, "Call to %s %s::%s() from scope %s",
            zend_visibility_string(constructor->common.fn_flags), ZSTR_VAL(constructor->common.scope->name),
            ZSTR_VAL(constructor->common.function_name), ZSTR_VAL(scope->name)
        );
    } else {
        zend_throw_error(NULL, "Call to %s %s::%s() from global scope", zend_visibility_string(constructor->common.fn_flags), ZSTR_VAL(constructor->common.scope->name), ZSTR_VAL(constructor->common.function_name));
    }
}
/* }}} */
 
ZEND_API zend_function *zend_std_get_constructor(zend_object *zobj) /* {{{ */
{
    zend_function *constructor = zobj->ce->constructor;
 
    if (constructor) {
        if (UNEXPECTED(!(constructor->op_array.fn_flags & ZEND_ACC_PUBLIC))) {
            zend_class_entry *scope = get_fake_or_executed_scope();
            if (UNEXPECTED(constructor->common.scope != scope)) {
                if (UNEXPECTED(constructor->op_array.fn_flags & ZEND_ACC_PRIVATE)
                 || UNEXPECTED(!zend_check_protected(zend_get_function_root_class(constructor), scope))) {
                    zend_bad_constructor_call(constructor, scope);
                    zend_object_store_ctor_failed(zobj);
                    constructor = NULL;
                }
            }
        }
    }
 
    return constructor;
}
/* }}} */
 
ZEND_API int zend_std_compare_objects(zval *o1, zval *o2) /* {{{ */
{
    zend_object *zobj1, *zobj2;
 
    if (zend_objects_check_stack_limit()) {
        zend_throw_error(NULL, "Maximum call stack size reached during object comparison");
        return ZEND_UNCOMPARABLE;
    }
 
    if (Z_TYPE_P(o1) != Z_TYPE_P(o2)) {
        /* Object and non-object */
        zval *object;
        zval *value;
        zval casted;
        bool object_lhs;
        if (Z_TYPE_P(o1) == IS_OBJECT) {
            object = o1;
            value = o2;
            object_lhs = true;
        } else {
            object = o2;
            value = o1;
            object_lhs = false;
        }
        ZEND_ASSERT(Z_TYPE_P(value) != IS_OBJECT);
        uint8_t target_type = (Z_TYPE_P(value) == IS_FALSE || Z_TYPE_P(value) == IS_TRUE)
                                 ? _IS_BOOL : Z_TYPE_P(value);
        if (Z_OBJ_HT_P(object)->cast_object(Z_OBJ_P(object), &casted, target_type) == FAILURE) {
            // TODO: Less crazy.
            if (target_type == IS_LONG || target_type == IS_DOUBLE) {
                zend_error(E_NOTICE, "Object of class %s could not be converted to %s",
                           ZSTR_VAL(Z_OBJCE_P(object)->name), zend_get_type_by_const(target_type));
                if (target_type == IS_LONG) {
                    ZVAL_LONG(&casted, 1);
                } else {
                    ZVAL_DOUBLE(&casted, 1.0);
                }
            } else {
                return object_lhs ? 1 : -1;
            }
        }
        int ret = object_lhs ? zend_compare(&casted, value) : zend_compare(value, &casted);
        zval_ptr_dtor(&casted);
        return ret;
    }
 
    zobj1 = Z_OBJ_P(o1);
    zobj2 = Z_OBJ_P(o2);
 
    if (zobj1 == zobj2) {
        return 0; /* the same object */
    }
    if (zobj1->ce != zobj2->ce) {
        return ZEND_UNCOMPARABLE; /* different classes */
    }
    if (!zobj1->properties && !zobj2->properties
            && !zend_object_is_lazy(zobj1) && !zend_object_is_lazy(zobj2)) {
        zend_property_info *info;
        int i;
 
        if (!zobj1->ce->default_properties_count) {
            return 0;
        }
 
        /* It's enough to protect only one of the objects.
         * The second one may be referenced from the first and this may cause
         * false recursion detection.
         */
        /* use bitwise OR to make only one conditional jump */
        if (UNEXPECTED(Z_IS_RECURSIVE_P(o1))) {
            zend_throw_error(NULL, "Nesting level too deep - recursive dependency?");
            return ZEND_UNCOMPARABLE;
        }
        Z_PROTECT_RECURSION_P(o1);
 
        for (i = 0; i < zobj1->ce->default_properties_count; i++) {
            zval *p1, *p2;
 
            info = zobj1->ce->properties_info_table[i];
 
            if (!info) {
                continue;
            }
 
            p1 = OBJ_PROP(zobj1, info->offset);
            p2 = OBJ_PROP(zobj2, info->offset);
 
            if (Z_TYPE_P(p1) != IS_UNDEF) {
                if (Z_TYPE_P(p2) != IS_UNDEF) {
                    int ret;
 
                    ret = zend_compare(p1, p2);
                    if (ret != 0) {
                        Z_UNPROTECT_RECURSION_P(o1);
                        return ret;
                    }
                } else {
                    Z_UNPROTECT_RECURSION_P(o1);
                    return 1;
                }
            } else {
                if (Z_TYPE_P(p2) != IS_UNDEF) {
                    Z_UNPROTECT_RECURSION_P(o1);
                    return 1;
                }
            }
        }
 
        Z_UNPROTECT_RECURSION_P(o1);
        return 0;
    } else {
        return zend_compare_symbol_tables(
                zend_std_get_properties_ex(zobj1),
                zend_std_get_properties_ex(zobj2));
    }
}
/* }}} */
 
ZEND_API int zend_objects_not_comparable(zval *o1, zval *o2)
{
    return ZEND_UNCOMPARABLE;
}
 
// todo: make zend_std_has_property return bool as well
ZEND_API int zend_std_has_property(zend_object *zobj, zend_string *name, int has_set_exists, void **cache_slot) /* {{{ */
{
    bool result;
    zval *value = NULL;
    uintptr_t property_offset;
    const zend_property_info *prop_info = NULL;
 
    property_offset = zend_get_property_offset(zobj->ce, name, 1, cache_slot, &prop_info);
 
    if (EXPECTED(IS_VALID_PROPERTY_OFFSET(property_offset))) {
try_again:
        value = OBJ_PROP(zobj, property_offset);
        if (Z_TYPE_P(value) != IS_UNDEF) {
            goto found;
        }
        if (UNEXPECTED(Z_PROP_FLAG_P(value) & IS_PROP_UNINIT)) {
            /* Skip __isset() for uninitialized typed properties */
            goto lazy_init;
        }
    } else if (EXPECTED(IS_DYNAMIC_PROPERTY_OFFSET(property_offset))) {
        if (EXPECTED(zobj->properties != NULL)) {
            if (!IS_UNKNOWN_DYNAMIC_PROPERTY_OFFSET(property_offset)) {
                uintptr_t idx = ZEND_DECODE_DYN_PROP_OFFSET(property_offset);
 
                if (EXPECTED(idx < zobj->properties->nNumUsed * sizeof(Bucket))) {
                    Bucket *p = (Bucket*)((char*)zobj->properties->arData + idx);
 
                    if (EXPECTED(p->key == name) ||
                        (EXPECTED(p->h == ZSTR_H(name)) &&
                         EXPECTED(p->key != NULL) &&
                         EXPECTED(zend_string_equal_content(p->key, name)))) {
                        value = &p->val;
                        goto found;
                    }
                }
                CACHE_PTR_EX(cache_slot + 1, (void*)ZEND_DYNAMIC_PROPERTY_OFFSET);
            }
            value = zend_hash_find(zobj->properties, name);
            if (value) {
                if (cache_slot) {
                    uintptr_t idx = (char*)value - (char*)zobj->properties->arData;
                    CACHE_PTR_EX(cache_slot + 1, (void*)ZEND_ENCODE_DYN_PROP_OFFSET(idx));
                }
found:
                if (has_set_exists == ZEND_PROPERTY_NOT_EMPTY) {
                    result = zend_is_true(value);
                } else if (has_set_exists < ZEND_PROPERTY_NOT_EMPTY) {
                    ZEND_ASSERT(has_set_exists == ZEND_PROPERTY_ISSET);
                    ZVAL_DEREF(value);
                    result = (Z_TYPE_P(value) != IS_NULL);
                } else {
                    ZEND_ASSERT(has_set_exists == ZEND_PROPERTY_EXISTS);
                    result = true;
                }
                goto exit;
            }
        }
    } else if (IS_HOOKED_PROPERTY_OFFSET(property_offset)) {
        zend_function *get = prop_info->hooks[ZEND_PROPERTY_HOOK_GET];
 
        if (has_set_exists == ZEND_PROPERTY_EXISTS) {
            if (prop_info->flags & ZEND_ACC_VIRTUAL) {
                return true;
            }
            property_offset = prop_info->offset;
            goto try_again;
        }
 
        if (!get) {
            if (prop_info->flags & ZEND_ACC_VIRTUAL) {
                zend_throw_error(NULL, "Property %s::$%s is write-only",
                    ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
                return 0;
            } else {
                property_offset = prop_info->offset;
                goto try_again;
            }
        }
 
        zval rv;
        if (!zend_call_get_hook(prop_info, name, get, zobj, &rv)) {
            if (EG(exception)) {
                return 0;
            }
            property_offset = prop_info->offset;
            goto try_again;
        }
 
        if (has_set_exists == ZEND_PROPERTY_NOT_EMPTY) {
            result = zend_is_true(&rv);
        } else {
            ZEND_ASSERT(has_set_exists == ZEND_PROPERTY_ISSET);
            result = Z_TYPE(rv) != IS_NULL
                && (Z_TYPE(rv) != IS_REFERENCE || Z_TYPE_P(Z_REFVAL(rv)) != IS_NULL);
        }
        zval_ptr_dtor(&rv);
        return result;
    } else if (UNEXPECTED(EG(exception))) {
        result = false;
        goto exit;
    }
 
    if (!zobj->ce->__isset) {
        goto lazy_init;
    }
 
    result = false;
    if (has_set_exists != ZEND_PROPERTY_EXISTS) {
        uint32_t *guard = zend_get_property_guard(zobj, name);
 
        if (!((*guard) & IN_ISSET)) {
            zval rv;
 
            /* have issetter - try with it! */
            GC_ADDREF(zobj);
            (*guard) |= IN_ISSET; /* prevent circular getting */
            zend_std_call_issetter(zobj, name, &rv);
            result = zend_is_true(&rv);
            zval_ptr_dtor(&rv);
            if (has_set_exists == ZEND_PROPERTY_NOT_EMPTY && result) {
                if (EXPECTED(!EG(exception)) && zobj->ce->__get && !((*guard) & IN_GET)) {
                    (*guard) |= IN_GET;
                    zend_std_call_getter(zobj, name, &rv);
                    (*guard) &= ~IN_GET;
                    result = i_zend_is_true(&rv);
                    zval_ptr_dtor(&rv);
                } else {
                    result = false;
                }
            }
            (*guard) &= ~IN_ISSET;
            OBJ_RELEASE(zobj);
        } else {
            goto lazy_init;
        }
    }
 
exit:
    return result;
 
lazy_init:
    if (UNEXPECTED(zend_lazy_object_must_init(zobj))) {
        if (!value || (Z_PROP_FLAG_P(value) & IS_PROP_LAZY)) {
            zobj = zend_lazy_object_init(zobj);
            if (!zobj) {
                result = 0;
                goto exit;
            }
 
            if (UNEXPECTED(zobj->ce->__isset)) {
                uint32_t *guard = zend_get_property_guard(zobj, name);
                if (!((*guard) & IN_ISSET)) {
                    (*guard) |= IN_ISSET;
                    result = zend_std_has_property(zobj, name, has_set_exists, cache_slot);
                    (*guard) &= ~IN_ISSET;
                    return result;
                }
            }
 
            return zend_std_has_property(zobj, name, has_set_exists, cache_slot);
        }
    }
 
    result = 0;
    goto exit;
}
/* }}} */
 
ZEND_API zend_string *zend_std_get_class_name(const zend_object *zobj) /* {{{ */
{
    return zend_string_copy(zobj->ce->name);
}
/* }}} */
 
ZEND_API zend_result zend_std_cast_object_tostring(zend_object *readobj, zval *writeobj, int type) /* {{{ */
{
    switch (type) {
        case IS_STRING: {
            zend_class_entry *ce = readobj->ce;
            if (ce->__tostring) {
                zval retval;
                GC_ADDREF(readobj);
                zend_call_known_instance_method_with_0_params(ce->__tostring, readobj, &retval);
                zend_object_release(readobj);
                if (EXPECTED(Z_TYPE(retval) == IS_STRING)) {
                    ZVAL_COPY_VALUE(writeobj, &retval);
                    return SUCCESS;
                }
                zval_ptr_dtor(&retval);
                if (!EG(exception)) {
                    zend_throw_error(NULL, "Method %s::__toString() must return a string value", ZSTR_VAL(ce->name));
                }
            }
            return FAILURE;
        }
        case _IS_BOOL:
            ZVAL_TRUE(writeobj);
            return SUCCESS;
        default:
            return FAILURE;
    }
}
/* }}} */
 
ZEND_API zend_result zend_std_get_closure(zend_object *obj, zend_class_entry **ce_ptr, zend_function **fptr_ptr, zend_object **obj_ptr, bool check_only) /* {{{ */
{
    zend_class_entry *ce = obj->ce;
    zval *func = zend_hash_find_known_hash(&ce->function_table, ZSTR_KNOWN(ZEND_STR_MAGIC_INVOKE));
 
    if (func == NULL) {
        return FAILURE;
    }
    *fptr_ptr = Z_FUNC_P(func);
 
    *ce_ptr = ce;
    if ((*fptr_ptr)->common.fn_flags & ZEND_ACC_STATIC) {
        if (obj_ptr) {
            *obj_ptr = NULL;
        }
    } else {
        if (obj_ptr) {
            *obj_ptr = obj;
        }
    }
    return SUCCESS;
}
/* }}} */
 
ZEND_API HashTable *zend_std_get_properties_for(zend_object *obj, zend_prop_purpose purpose) {
    HashTable *ht;
    switch (purpose) {
        case ZEND_PROP_PURPOSE_DEBUG:
            if (obj->handlers->get_debug_info) {
                int is_temp;
                ht = obj->handlers->get_debug_info(obj, &is_temp);
                if (ht && !is_temp) {
                    GC_TRY_ADDREF(ht);
                }
                return ht;
            }
            ZEND_FALLTHROUGH;
        case ZEND_PROP_PURPOSE_JSON:
        case ZEND_PROP_PURPOSE_GET_OBJECT_VARS:
        case ZEND_PROP_PURPOSE_VAR_EXPORT:
            if (obj->ce->num_hooked_props) {
                return zend_hooked_object_build_properties(obj);
            }
            ht = obj->handlers->get_properties(obj);
            if (ht) {
                GC_TRY_ADDREF(ht);
            }
            return ht;
        case ZEND_PROP_PURPOSE_ARRAY_CAST:
            ht = zend_get_properties_no_lazy_init(obj);
            if (ht) {
                GC_TRY_ADDREF(ht);
            }
            return ht;
        case ZEND_PROP_PURPOSE_SERIALIZE: {
            if (zend_object_is_lazy(obj)
                    && !zend_lazy_object_initialize_on_serialize(obj)) {
                ht = zend_get_properties_no_lazy_init(obj);
            } else {
                ht = obj->handlers->get_properties(obj);
            }
            if (ht) {
                GC_TRY_ADDREF(ht);
            }
            return ht;
        }
        default:
            ZEND_UNREACHABLE();
            return NULL;
    }
}
 
ZEND_API HashTable *zend_get_properties_for(zval *obj, zend_prop_purpose purpose) {
    zend_object *zobj = Z_OBJ_P(obj);
 
    if (zobj->handlers->get_properties_for) {
        return zobj->handlers->get_properties_for(zobj, purpose);
    }
 
    return zend_std_get_properties_for(zobj, purpose);
}
 
ZEND_API const zend_object_handlers std_object_handlers = {
    0,                                      /* offset */
 
    zend_object_std_dtor,                   /* free_obj */
    zend_objects_destroy_object,         /* dtor_obj */
    zend_objects_clone_obj,                   /* clone_obj */
 
    zend_std_read_property,                   /* read_property */
    zend_std_write_property,             /* write_property */
    zend_std_read_dimension,             /* read_dimension */
    zend_std_write_dimension,               /* write_dimension */
    zend_std_get_property_ptr_ptr,         /* get_property_ptr_ptr */
    zend_std_has_property,                 /* has_property */
    zend_std_unset_property,             /* unset_property */
    zend_std_has_dimension,                   /* has_dimension */
    zend_std_unset_dimension,               /* unset_dimension */
    zend_std_get_properties,             /* get_properties */
    zend_std_get_method,                 /* get_method */
    zend_std_get_constructor,               /* get_constructor */
    zend_std_get_class_name,             /* get_class_name */
    zend_std_cast_object_tostring,         /* cast_object */
    NULL,                                   /* count_elements */
    zend_std_get_debug_info,             /* get_debug_info */
    zend_std_get_closure,                   /* get_closure */
    zend_std_get_gc,                     /* get_gc */
    NULL,                                   /* do_operation */
    zend_std_compare_objects,               /* compare */
    NULL,                                   /* get_properties_for */
};