3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a= array('2','3'); $b= array('4'); $a = array_merge($a,$b) print_r($a);
Output for 5.4.0 - 5.4.15
Parse error: syntax error, unexpected 'print_r' (T_STRING) in /in/r13dg on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.25
Parse error: syntax error, unexpected T_STRING in /in/r13dg on line 5
Process exited with code 255.
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181.55 ms | 1395 KiB | 49 Q