PHP实现分组 类似mysql groupby+in读取详解编程语言

    /** 
     * @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();

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 
                ) 
 
        ) 
 
)