3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Entity { protected $_properties = []; public function &__get($property) { $value = null; return $value; } public function __set($property, $value) { $property = [$property => $value]; foreach ($property as $p => $value) { $this->_properties[$p] = $value; } } } class CustomIterator extends IteratorIterator { public $callback; public function __construct($items) { $this->callback = function ($a) { $a->foo .= ' world'; return $a; }; parent::__construct($items); } public function current() { $c = $this->callback; return $c(parent::current()); } } $entity = new Entity(); $it = new CustomIterator(new ArrayIterator([$entity])); $it->rewind(); var_dump($it->current());
based on S3fTZ
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.27, 7.4.0 - 7.4.15, 8.0.0 - 8.0.3
object(Entity)#1 (1) { ["_properties":protected]=> array(1) { ["foo"]=> string(6) " world" } }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/pb3a2 on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/pb3a2 on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/pb3a2 on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/pb3a2 on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/pb3a2 on line 7
Process exited with code 255.