3v4l.org

run code in 300+ PHP versions simultaneously
<?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 7ToJl on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_AS in 7ToJl on line 4
Process exited with code 255.
preferences:
160.34 ms | 1399 KiB | 43 Q