3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $b = $a ?: 4; var_dump($b);
based on 4cpqB
Output for 5.3.0 - 7.2.0
Notice: Undefined variable: a in /in/un1Ir on line 3 int(4)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected ':' in /in/un1Ir on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':' in /in/un1Ir on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/un1Ir on line 3
Process exited with code 255.