php 获取完整url地址

<?php 
//获取域名或主机地址 
echo $_SERVER['HTTP_HOST']."<br>"; 
//获取网页地址 
echo $_SERVER['PHP_SELF']."<br>"; 
//获取网址参数 
echo $_SERVER["QUERY_STRING"]."<br>"; 
//来源网页的详细地址 
echo $_SERVER['HTTP_REFERER']."<br>"; 
?>

function GetCurUrl() 
{ 
if(!empty($_SERVER["REQUEST_URI"])) 
{ 
$scrtName = $_SERVER["REQUEST_URI"]; 
$nowurl = $scrtName; 
} 
else 
{ 
$scrtName = $_SERVER["PHP_SELF"]; 
if(empty($_SERVER["QUERY_STRING"])) 
{ 
$nowurl = $scrtName; 
} 
else 
{ 
$nowurl = $scrtName."?".$_SERVER["QUERY_STRING"]; 
} 
} 
return $nowurl; 
} 
//实例调用方法 
//echo GEtCurUrl();

function getServerName() 
{ 
$ServerName = strtolower($_SERVER['SERVER_NAME']?$_SERVER['SERVER_NAME']:$_SERVER['HTTP_HOST']); 
if( strpos($ServerName,'http://') ) 
{ 
return str_replace('http://','',$ServerName); 
} 
return $ServerName; 
} 
//实例调用方法 
echo getServerName();

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