字符串 转成数组

如：$res = utf-8=3&wek=123&id=5&toes=0998887&des_id=78798799

解决方案：

    /**     * queryStrToArray      * http参数转数组     * @param mixed $queryStr      * @access private     * @return void     */    private function queryStrToArray($queryStr)    {        $resultArray = array();        foreach (explode('&', $queryStr) as $pair) {            list($key, $value) = explode('=', $pair);            //a dot present            if (strpos($key, '.') !== false) {                list($subKey, $subVal) = explode('.', $key);                if (preg_match('/(?P<name>\w+)\[(?P<index>\w+)\]/', $subKey, $matches)) {                    $resultArray[$matches['name']][$matches['index']][$subVal] = $value;                } else {                    $resultArray[$subKey][$subVal] = $value;                }            } else {                $resultArray[$key] = $value;            }        }        return $resultArray;    }$resultArr = $this->queryStrToArray($res);