解析结果：

Array
(
    [name] => 张山
    [age] => 25
    [city] => 北京
    [subscribe] => 
    [parsed] => Array
        (
            [name] => 张山
            [age] => 25
            [city] => 北京
        )

    [raw_GET] => Array
        (
            [name] => 张山
            [age] => 25
            [city] => 北京
            [active] => 1
            [tags] => php,web,bac
        )

)

欢迎，张山！您今年 25 岁，来自 北京。