3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $counts = array(); $item = 2; $counts[$item] ?? $counts[$item] = 2 : $counts[$item]++; var_dump($counts); $counts[$item] ?? $counts[$item] = 1 : $counts[$item]++; var_dump($counts);
based on I711G
Output for 7.0.0 - 7.0.2
Parse error: syntax error, unexpected ':' in /in/8qs1B on line 5
Process exited with code 255.
Output for 5.3.21 - 5.6.17
Parse error: syntax error, unexpected '?' in /in/8qs1B on line 5
Process exited with code 255.