PHP获取当前页面地址

#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

echo $_SERVER[\'PHP_SELF\']."<br>"; #/blog/testurl.php

 

//获取网址参数

echo $_SERVER["QUERY_STRING"]."<br>"; #id=5

 

//获取用户代理

echo $_SERVER[\'HTTP_REFERER\']."<br>";

 

//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://localhost/blog/testurl.php?id=5

 

//包含端口号的完整url

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

#http://localhost:80/blog/testurl.php?id=5

 

//只取路径

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

echo dirname($url);

#http://localhost/blog