javascript实现：top.location.href顶级窗口的地址this.location.href当前窗口的地址PHP实现:#测试网址:http://localhost/blog/testurl.PHP?id=5//获取域名或主机地址echo$_SERVER[HTTP_HOST].br;localhost//获取网页地址
javascript实现：top.location.href顶级窗口的地址
this.location.href当前窗口的地址PHP实现:#测试网址:http://localhost/blog/testurl.PHP?id=5
//获取域名或主机地址
echo$_SERVER['HTTP_HOST']."<br>";localhost
//获取网页地址$_SERVER['PHP_SELF']."<br>";/blog/testurl.PHP
//获取网址参数$_SERVER["QUERY_STRING"]."<br>";id=5
//获取用户代理$_SERVER['HTTP_REFERER']."<br>";
//获取完整的urlecho'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];
http://localhost/blog/testurl.PHP?id=5
//包含端口号的完整url$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
http://localhost:80/blog/testurl.PHP?id=5
//只取路径
$url='http://'.$_SERVER['SERVER_NAME'].echodirname($url);
http://localhost/blog
