PHP获取地址栏URL函数

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

// 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;
}
?>

  echo curPageURL();
?>