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run code in 300+ PHP versions simultaneously
<?php $foo = null; $bar = null; $what = $foo ?? $bar ?? 'DEFAULT'; var_dump($what);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(7) "DEFAULT"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/uj7sB on line 6
Process exited with code 255.
preferences:
263.55 ms | 402 KiB | 330 Q