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<?php $params = ['a' => 'b']; function manman($v, $k) { return substr($k, 0, 7) == 'filter_'; }; array_filter($params, 'manman');
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 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 ArgumentCountError: Too few arguments to function manman(), 1 passed and exactly 2 expected in /in/aYfkt:3 Stack trace: #0 [internal function]: manman('b') #1 /in/aYfkt(6): array_filter(Array, 'manman') #2 {main} thrown in /in/aYfkt on line 3
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Warning: Missing argument 2 for manman() in /in/aYfkt on line 3 Notice: Undefined variable: k in /in/aYfkt on line 4

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