PHP中获取当前页面的完整URL

JavaScript：

//顶级窗口的地址
top.location.href 

//当前窗口的地址
this.location.href

PHP实现：

#测试网址:     http://www.lulumeihandmade.com/list/12.html

//获取域名或主机地址 

echo $_SERVER['HTTP_HOST']; 

#www.lulumeihandmade.com

//获取网页地址 

echo $_SERVER['PHP_SELF']; 

#/list/12.html

//获取网址参数 

echo $_SERVER["QUERY_STRING"];

 #id=5

//获取用户代理 

echo $_SERVER['HTTP_REFERER']; 

//获取完整的url

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];

#http://www.lulumeihandmade.com/list/12.html

//包含端口号的完整url

echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; 

#http://www.lulumeihandmade.com:80/list/12.html

//只取路径

$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]; 

echo dirname($url);

#http://www.lulumeihandmade.com/list