3v4l.org

run code in 300+ PHP versions simultaneously
<?php system(echo 'hol');
Output for 5.4.0 - 5.4.25
Parse error: syntax error, unexpected 'echo' (T_ECHO), expecting ')' in /in/ufdEA on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ECHO, expecting ')' in /in/ufdEA on line 2
Process exited with code 255.
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173.52 ms | 1395 KiB | 62 Q