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<?php $a = ['moein' => 'mon', 'antonio' => 'mon', 'john' => 'mon']; var_dump(array_search($a, 'mon'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught TypeError: array_search(): Argument #2 ($haystack) must be of type array, string given in /in/5jPfh:5 Stack trace: #0 /in/5jPfh(5): array_search(Array, 'mon') #1 {main} thrown in /in/5jPfh on line 5
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, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_search() expects parameter 2 to be array, string given in /in/5jPfh on line 5 NULL

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