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run code in 300+ PHP versions simultaneously
<?php $value = 5; $null = null; echo $null ?? $value; echo null ?? $value ?? $null; echo null ?? $null ?? value;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
55 Fatal error: Uncaught Error: Undefined constant "value" in /in/YF085:8 Stack trace: #0 {main} thrown in /in/YF085 on line 8
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
55 Warning: Use of undefined constant value - assumed 'value' (this will throw an Error in a future version of PHP) in /in/YF085 on line 8 value
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
55 Notice: Use of undefined constant value - assumed 'value' in /in/YF085 on line 8 value
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/YF085 on line 6
Process exited with code 255.

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