3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php $foo['bar'] = 'key'; $arr = array($foo['bar'] => 'test'); var_dump($arr);
Output for 5.3.0 - 5.3.17, 5.4.0 - 5.4.7
Parse error: syntax error, unexpected '<' in BEA37 on line 2
Process exited with code 255.
preferences:
175.68 ms | 1395 KiB | 33 Q