xml=>数组

/**
 * XML转化为数组
 *
 * @author 何洋 2016-3-17 14:37:20
 */
function xml_to_array($xml){
    $reg = "/<(\w+)[^>]*?>([\x00-\xFF]*?)<\/\1>/";
    if(preg_match_all($reg, $xml, $matches)){
        $count = count($matches[0]);
        $arr = array();
        for($i = 0; $i < $count; $i++){
            $key= $matches[1][$i];
            $val = xml_to_array( $matches[2][$i] );  // 递归
            if(array_key_exists($key, $arr)){
                if(is_array($arr[$key])){
                    if(!array_key_exists(0,$arr[$key])){
                        $arr[$key] = array($arr[$key]);
                    }
                }else{
                    $arr[$key] = array($arr[$key]);
                }
                $arr[$key][] = $val;
            }else{
                $arr[$key] = $val;
            }
        }
        return $arr;
    }else{
        return $xml;
    }
}

/**
 * 对象转数组
 *
 * @author 何洋 2016-3-9 10:27:14
 */
function object_array($obj){
    $_arr = is_object($obj) ? get_object_vars($obj) :$obj;
    foreach ($_arr as $key=>$val){
        $val = (is_array($val) || is_object($val)) ? object_to_array($val):$val;
        $arr[$key] = $val;
    }
    return $arr;
}