3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(); var_dump(isset($array['foo']); var_dump(array_key_exists('foo', $array));
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Parse error: syntax error, unexpected ';' in /in/Xhr6c on line 5
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ';' in /in/Xhr6c on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Xhr6c on line 5
Process exited with code 255.
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212.06 ms | 1395 KiB | 121 Q