3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = null; echo $var ?? 'true' : 'false';
Output for 7.0.0
Parse error: syntax error, unexpected ':', expecting ',' or ';' in /in/E5GKC on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Parse error: syntax error, unexpected '?' in /in/E5GKC on line 3
Process exited with code 255.
preferences:
168.7 ms | 1395 KiB | 24 Q