3v4l.org

run code in 300+ PHP versions simultaneously
<?php isset(-1);
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.23
Parse error: syntax error, unexpected '-' in /in/WCDnr on line 2
Process exited with code 255.
preferences:
175.76 ms | 1399 KiB | 60 Q