3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1=array(); $a2=array(34,67); $e=array_merge($a1,$a2) print_r($e); ?>
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected 'print_r' (T_STRING) in /in/EYbR5 on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/EYbR5 on line 5
Process exited with code 255.
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183.16 ms | 1395 KiB | 64 Q