3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $w = 'Stackoverflow'; foreach( as $k => $v) { echo dechex($k), ' ', $v, PHP_EOL; }
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected 'as' (T_AS) in /in/KjnaE on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_AS in /in/KjnaE on line 4
Process exited with code 255.