php数组按指定元素分组
/*数组按指定元素key值分组 * @param $dataArr array 原二组数组 * @param $keyStr string 指定元素key值 * @return array */ public function dataGroup($dataArr,$keyStr) { $newArr=[]; foreach ($dataArr as $k => $val) { $newArr[$val[$keyStr]][] = $val; } return $newArr; }