3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a','b') if(array_key_exists('a',$a)){ echo 'true';}
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected 'if' (T_IF) in /in/9EibZ on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected T_IF in /in/9EibZ on line 4
Process exited with code 255.
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189.6 ms | 1395 KiB | 43 Q