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<?php $str = 'maría'; $count = count(preg_grep("/[áéíó]/", $str)); echo $count;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($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.

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