3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('z'); var_dump(is_int(key($a)))
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected end of file in /in/U4tmL on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected $end in /in/U4tmL on line 5
Process exited with code 255.
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172.88 ms | 1395 KiB | 58 Q