Here is a list of all enum values with links to the structures/unions they belong to:

• HEADER_FIELD : php_cli_server_client
• HEADER_NONE : php_cli_server_client
• HEADER_VALUE : php_cli_server_client
• MYSQLND_SSL_PEER_DEFAULT : st_mysqlnd_vio_options
• MYSQLND_SSL_PEER_DONT_VERIFY : st_mysqlnd_vio_options
• MYSQLND_SSL_PEER_VERIFY : st_mysqlnd_vio_options
• OBLIGATION_CLASS_CONSTANT_COMPATIBILITY : variance_obligation
• OBLIGATION_COMPATIBILITY : variance_obligation
• OBLIGATION_DEPENDENCY : variance_obligation
• OBLIGATION_PROPERTY_COMPATIBILITY : variance_obligation
• OBLIGATION_PROPERTY_HOOK : variance_obligation
• PHP_CLI_SERVER_CHUNK_HEAP : php_cli_server_chunk
• PHP_CLI_SERVER_CHUNK_IMMORTAL : php_cli_server_chunk
• STREAM_XPORT_CRYPTO_OP_ENABLE : _php_stream_xport_crypto_param
• STREAM_XPORT_CRYPTO_OP_SETUP : _php_stream_xport_crypto_param
• STREAM_XPORT_OP_ACCEPT : _php_stream_xport_param
• STREAM_XPORT_OP_BIND : _php_stream_xport_param
• STREAM_XPORT_OP_CONNECT : _php_stream_xport_param
• STREAM_XPORT_OP_CONNECT_ASYNC : _php_stream_xport_param
• STREAM_XPORT_OP_GET_NAME : _php_stream_xport_param
• STREAM_XPORT_OP_GET_PEER_NAME : _php_stream_xport_param
• STREAM_XPORT_OP_LISTEN : _php_stream_xport_param
• STREAM_XPORT_OP_RECV : _php_stream_xport_param
• STREAM_XPORT_OP_SEND : _php_stream_xport_param
• STREAM_XPORT_OP_SHUTDOWN : _php_stream_xport_param