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<?php $ids = [1, 2, 'string']; array_filter($ids, function ($id) { $pass = is_numeric($id) && $id == (int) $id; assert($pass, $id . ' is not an integer'); return $pass; });
Output for 5.4.2 - 5.4.7
Warning: assert() expects exactly 1 parameter, 2 given in /in/7dae2 on line 7 Warning: assert() expects exactly 1 parameter, 2 given in /in/7dae2 on line 7 Warning: assert() expects exactly 1 parameter, 2 given in /in/7dae2 on line 7
Output for 5.4.8 - 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, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: assert(): string is not an integer failed in /in/7dae2 on line 7
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34
Fatal error: Uncaught AssertionError: string is not an integer in /in/7dae2:7 Stack trace: #0 /in/7dae2(7): assert(false, 'string is not a...') #1 [internal function]: {closure}('string') #2 /in/7dae2(9): array_filter(Array, Object(Closure)) #3 {main} thrown in /in/7dae2 on line 7
Process exited with code 255.
Output for 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Fatal error: Uncaught AssertionError: string is not an integer in /in/7dae2:7 Stack trace: #0 /in/7dae2(7): assert(false, 'string is not a...') #1 [internal function]: {closure}('string') #2 /in/7dae2(5): array_filter(Array, Object(Closure)) #3 {main} thrown in /in/7dae2 on line 7
Process exited with code 255.
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Fatal error: Uncaught AssertionError: string is not an integer in /in/7dae2:7 Stack trace: #0 /in/7dae2(7): assert(false, 'string is not a...') #1 [internal function]: {closure:/in/7dae2:5}('string') #2 /in/7dae2(5): array_filter(Array, Object(Closure)) #3 {main} thrown in /in/7dae2 on line 7
Process exited with code 255.
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