PHP实现分组 类似mysql groupby+in读取

PHP实现分组 类似mysqlgroupby+in读取 反正都要读取 那就用PHP来分组吧

    /**
     * @description:根据数据
     * @param {dataArr:需要分组的数据；keyStr:分组依据}
     * @return:
     */
    protected function dataGroup($dataArr, $keyStr)
    {
        $newArr = [];
        foreach ($dataArr as $k => $val) {
  
            $newArr[$val[$keyStr]][] = $val;
        }
        return $newArr;
    }

  $array = array(
            array('name' => 'zhangsan', 'chinese' => '89', 'math' => '95', 'english' => '88'),
            array('name' => 'zhangsan', 'chinese' => '11', 'math' => '816', 'english' => '90'),
            array('name' => 'lisi', 'chinese' => '3', 'math' => '286', 'english' => '902'),
            array('name' => 'lisi', 'chinese' => '921', 'math' => '836', 'english' => '90'),
            array('name' => 'lisi', 'chinese' => '291', 'math' => '846', 'english' => '290'),
        );
        $list=$this->dataGroup($array,'name');
        print_r($list);
        exit();

输出如下

Array
(
    [zhangsan] => Array
        (
            [0] => Array
                (
                    [name] => zhangsan
                    [chinese] => 89
                    [math] => 95
                    [english] => 88
                )

            [1] => Array
                (
                    [name] => zhangsan
                    [chinese] => 11
                    [math] => 816
                    [english] => 90
                )

        )

    [lisi] => Array
        (
            [0] => Array
                (
                    [name] => lisi
                    [chinese] => 3
                    [math] => 286
                    [english] => 902
                )

            [1] => Array
                (
                    [name] => lisi
                    [chinese] => 921
                    [math] => 836
                    [english] => 90
                )

            [2] => Array
                (
                    [name] => lisi
                    [chinese] => 291
                    [math] => 846
                    [english] => 290
                )

        )

)