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<?php $str = 'óóómaóríaéé'; function substr_count_array( $haystack, $needle ) { foreach ($needle as $substring) { $count[$substring] += substr_count( $haystack, $substring); } return $count; } print_r(substr_count_array($str, array("á","é","í","ó")));

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38.28 ms | 402 KiB | 5 Q