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run code in 300+ PHP versions simultaneously
<?php function test(){} $a = test; var_dump($a instanceof Closure);exit;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "test" in /in/lCIAY:5 Stack trace: #0 {main} thrown in /in/lCIAY on line 5
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 test - assumed 'test' (this will throw an Error in a future version of PHP) in /in/lCIAY on line 5 bool(false)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Use of undefined constant test - assumed 'test' in /in/lCIAY on line 5 bool(false)

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