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<?php $str = 'maría'; $count = count(preg_grep("/[áéíó]/", $str)); echo $count;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($array) must be of type array, string given in /in/Jg4Ac:3 Stack trace: #0 /in/Jg4Ac(3): preg_grep('/[\xC3\xA1\xC3\xA9\xC3\xAD\xC3\xB3]/', 'mar\xC3\xADa') #1 {main} thrown in /in/Jg4Ac on line 3
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: preg_grep() expects parameter 2 to be array, string given in /in/Jg4Ac on line 3 Warning: count(): Parameter must be an array or an object that implements Countable in /in/Jg4Ac on line 3 0
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Warning: preg_grep() expects parameter 2 to be array, string given in /in/Jg4Ac on line 3 0
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/Jg4Ac on line 3 0
Output for 4.3.0 - 4.3.10
Warning: Second argument to preg_grep() should be an array in /in/Jg4Ac on line 3 0

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