php去除数组中重复数据

废话不多说，直接上代码

代码如下:
/**
         * 给数组排重
         * 与array_unique函数的区别：它要求val是字符串，而这个可以是数组/对象
         *
         * @param unknown_type $arr 要排重的数组
         * @param unknown_type $reserveKey 是否保留原来的Key
         * @return unknown
         */
        static function m_ArrayUnique($arr, $reserveKey = false)
        {
            if (is_array($arr) && !empty($arr))
            {
                foreach ($arr as $key => $value)
                {
                    $tmpArr[$key] = serialize($value) . '';
                }
                $tmpArr = array_unique($tmpArr);
                $arr = array();
                foreach ($tmpArr as $key => $value)
                {
                    if ($reserveKey)
                    {
                        $arr[$key] = unserialize($value);
                    }
                    else
                    {
                        $arr[] = unserialize($value);
                    }