php获得当前的脚本网址

//获得当前的脚本网址
functionGetCurUrl(){
if(!empty($_SERVER["REQUEST_URI"])){
$scriptName=$_SERVER["REQUEST_URI"];
$nowurl=$scriptName;
}else{
$scriptName=$_SERVER["PHP_SELF"];
if(empty($_SERVER["QUERY_STRING"]))$nowurl=$scriptName;
else$nowurl=$scriptName."?".$_SERVER["QUERY_STRING"];
}
return$nowurl;
}