12function bzread($bz,
int $length = 1024): string|false {}
bzcompress(string $data, int $block_size=4, int $work_factor=0)
bzread($bz, int $length=1024)
bzdecompress(string $data, bool $use_less_memory=false)
bzwrite($bz, string $data, ?int $length=null)
bzopen($file, string $mode)
function(EX_VAR(opline->result.var))