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run code in 300+ PHP versions simultaneously
<?php echo isset(null) ?: 0;
Output for 7.4.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/JTqBE on line 3
Process exited with code 255.
preferences:
155.89 ms | 1003 KiB | 7 Q