获得当前的脚本网址

function get_php_url(){
        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;
}

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function geturl(){
$str='http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
return $str;
}