PHP獲取當前頁面完整路徑URL

//PHP獲取當前頁面完整路徑URL
 1 <?php
function getFullUrl(){
    # 解決通用問題
    $requestUri = '';
    if (isset($_SERVER['REQUEST_URI'])) {
        $requestUri = $_SERVER['REQUEST_URI'];
    } else {
        if (isset($_SERVER['argv'])) {
            $requestUri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0];
        } else if(isset($_SERVER['QUERY_STRING'])) {
            $requestUri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];
        }
    }
//    echo $requestUri.'<br />';
    $scheme = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : "";
    $protocol = strstr(strtolower($_SERVER["SERVER_PROTOCOL"]), "/",true) . $scheme;
       //端口還是蠻重要的，畢竟需要兼容特殊的場景
    $port = ($_SERVER["SERVER_PORT"] == "80") ? "" : (":".$_SERVER["SERVER_PORT"]);
    # 獲取的完整url
    $_fullUrl = $protocol . "://" . $_SERVER['SERVER_NAME'] . $port . $requestUri;
    return $_fullUrl;
}

echo getFullUrl();