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run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); assert_options(ASSERT_QUIET_EVAL, 1); assert('$foo');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Uncaught Error: Undefined constant "ASSERT_QUIET_EVAL" in /in/k2rbK:4 Stack trace: #0 {main} thrown in /in/k2rbK on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/k2rbK on line 5 Warning: assert(): Assertion "$foo" failed in /in/k2rbK on line 5
Output for 7.1.0 - 7.1.25
Warning: assert(): Assertion "$foo" failed in /in/k2rbK on line 5

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