二维数组去掉重复值

   //二维数组去掉重复值
    public function arrunique($arr = array())
    {
        foreach ($arr[0] as $k => $v) {
            $arr_inner_key[] = $k; //先把二维数组中的内层数组的键值记录在在一维数组中
        }
        foreach ($arr as $k => $v) {
            $v = join(",", $v); //降维 用implode()也行
            $temp[$k] = $v; //保留原来的键值 $temp[]即为不保留原来键值
        }
        $temp = array_unique($temp); //去重：去掉重复的字符串
        foreach ($temp as $k => $v) {
            $a = explode(",", $v); //拆分后的重组 如：Array( [0] => james [1] => 30 )
            $arr_after[$k] = array_combine($arr_inner_key, $a); //将原来的键与值重新合并
        }
        return $arr_after;
    }