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run code in 300+ PHP versions simultaneously
<?php echo (is_a(NULL, Exception)) ? 'yes' : 'no';
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "Exception" in /in/6JQHC:2 Stack trace: #0 {main} thrown in /in/6JQHC on line 2
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
Warning: Use of undefined constant Exception - assumed 'Exception' (this will throw an Error in a future version of PHP) in /in/6JQHC on line 2 no
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant Exception - assumed 'Exception' in /in/6JQHC on line 2 no
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Use of undefined constant Exception - assumed 'Exception' in /in/6JQHC on line 2 Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/6JQHC on line 2 no

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