3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $_bar = 'baz'; public function __construct() { foreach (array(&$this->_bar) as &$field) { $field = 'bat'; } unset($field); } } $foo = new Foo; echo $foo->_bar;
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bat
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '&' in /in/NWhfP on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected '&', expecting T_STRING or T_VARIABLE or '$' in /in/NWhfP on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '&', expecting T_STRING or T_VARIABLE or '$' in /in/NWhfP on line 6
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/NWhfP on line 4
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/NWhfP on line 4
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/NWhfP on line 4
Process exited with code 255.

preferences:
258.8 ms | 401 KiB | 459 Q