php array_count_value str_split
- 傳入一字串，回傳各字元的統計數量陣列
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orderedCount("abracadabra") == [['a', 5], ['b', 2], ['r', 2], ['c', 1], ['d', 1]] - 利用function array_count_values
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function orderedCount($text) { $textArray = str_split($text); $countArray = array_count_values($textArray); $result = []; foreach($countArray as $key => $value) { $result[] = [$key, $value]; } return $result; } - end