3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('toto' => null); var_dump(isset($array['toto'])); var_dump(array_key_exists('toto', $array)); var_dump(isset(''));
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '''' (T_CONSTANT_ENCAPSED_STRING) in /in/ghPJW on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/ghPJW on line 7
Process exited with code 255.
preferences:
175.38 ms | 1394 KiB | 64 Q