3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Entity { protected $_properties = []; public function &__get($property) { $value = null; if (isset($this->_properties[$property])) { $value =& $this->_properties[$property]; } return $value; } public function __set($property, $value) { $this->_properties[$property] = $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(); $entity->foo = 'hello'; $it = new CustomIterator(new ArrayIterator([$entity])); $it->rewind(); var_dump($it->current());
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.26, 7.4.0 - 7.4.14, 8.0.0
object(Entity)#1 (1) { ["_properties":protected]=> array(1) { ["foo"]=> string(11) "hello 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/S3fTZ on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/S3fTZ 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/S3fTZ 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/S3fTZ 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/S3fTZ on line 7
Process exited with code 255.