3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = array(1,3,5); $a2 echo array_key_exists(20, $a1); echo isset($a2); ?>
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/GgisT on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ECHO in /in/GgisT on line 4
Process exited with code 255.
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176.31 ms | 1394 KiB | 67 Q