PHP获取当前页面完整路径URL

//PHP获取当前页面完整路径URL
 1 <?php
 2 function getFullUrl(){
 3     # 解决通用问题
 4     $requestUri = '';
 5     if (isset($_SERVER['REQUEST_URI'])) {
 6         $requestUri = $_SERVER['REQUEST_URI'];
 7     } else {
 8         if (isset($_SERVER['argv'])) {
 9             $requestUri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0];
10         } else if(isset($_SERVER['QUERY_STRING'])) {
11             $requestUri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];
12         }
13     }
14 //    echo $requestUri.'<br />';
15     $scheme = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : "";
16     $protocol = strstr(strtolower($_SERVER["SERVER_PROTOCOL"]), "/",true) . $scheme;
       //端口还是蛮重要的，毕竟需要兼容特殊的场景
17     $port = ($_SERVER["SERVER_PORT"] == "80") ? "" : (":".$_SERVER["SERVER_PORT"]);
18     # 获取的完整url
19     $_fullUrl = $protocol . "://" . $_SERVER['SERVER_NAME'] . $port . $requestUri;
20     return $_fullUrl;
21 }
22 
23 echo getFullUrl();