php获取url地址一些函数总结

//获取域名或主机地址
echo $_SERVER['HTTP_HOST']."
"; #localhost

//获取网页地址
echo $_SERVER['PHP_SELF']."
"; #/blog/testurl.php

//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://'.$_SER*VER['HTTP_H*OS*T'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTT*P_*HOST'].$_SERVER['PHP_*SELF'].'?'.$_SERVER['QUERY_STRING'];
#http://*lo*ca*lhost/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"];
#https://www.111cn.net /blog/testurl.php?id=5

//只取路径
$url='http://'.$_*SERVER*[*'SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);
#http://loc**alhost*/blog

// 说明：获取完整url

function curpageurl()
{
$pageurl = 'http';

if ($_server["https"] == "on")
{
$pageurl .= "s";
}
$pageurl .= "://";

if ($_server["server_port"] != "80")
{
$pageurl .= $_server["server_name"] . ":" . $_server["server_port"] . $_server["request_uri"];
}
else
{
$pageurl .= $_server["server_name"] . $_server["request_uri"];
}
return $pageurl;
}
?>