/**
     * @return array
     * 1、陣列去重返回給前端(foreach迴圈)
     * 優點:可判斷多個去重條件
     */
    public function admin()
    {
        $arr = array(
            ['id' => 1, 'name' => 'PHP'],
            ['id' => 5, 'name' => 'JAVA'],
            ['id' => 2, 'name' => 'PYTHON'],
            [
 
'id' => 4, 'name' => 'VUE'],
            ['id' => 1, 'name' => 'PHP']
        );

        foreach ($arr as $key => $val) {
            foreach ($arr as $k => $v) {
                if ($key != $k && $val['name'] == $v['name'] && $val['id'] == $v['id']) unset($arr[$key
 
]);
            }
        }
        return array_merge([], $arr);
    }

    /**
     * @return array
     * 2、陣列去重返回給前端(PHP函式)
     * 缺點:去重條件只能一個
     */
    public function admin2()
    {

        $arr = array(
            ['id' => 1, 'name' => 'PHP'],
            ['id' => 5, 'name' => 'JAVA'],
            [
 
'id' => 2, 'name' => 'PYTHON'],
            ['id' => 4, 'name' => 'VUE'],
            ['id' => 1, 'name' => 'PHP']
        );

        /**
         * @param1  陣列
         * @param2  null
         * @param3  去重的欄位
         */
        $data = array_column($arr,null,'name');

        //array_values 返回陣列的所有值（非鍵名）
        return array_values($data);
    }