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run code in 200+ php & hhvm versions
Bugs & Features
<?php $counts = array(); $item = 2; $counts[$item] = ($counts[$item] ?? 1)++; var_dump($counts); $counts[$item] = ($counts[$item] ?? 1)++; var_dump($counts);
based on 3EiMd
Output for 7.0.0 - 7.0.2
Parse error: syntax error, unexpected '++' (T_INC) in /in/HM4O6 on line 6
Process exited with code 255.
Output for 5.3.21 - 5.6.17
Parse error: syntax error, unexpected '?' in /in/HM4O6 on line 6
Process exited with code 255.