php的web路徑獲取

<?php
class HttpTool
{
    /**


 * //獲取域名或主機地址 
 * #測試網址:     http://localhost:8081/test/testurl.php?id=5
 * 返回  localhost:8081
 */
public function getHost()
{
    return $_SERVER['HTTP_HOST'];
}

/**
 * 當前頁面的url（包括參數）
 */
public function getWebUrl()
{
    $pageURL = 'http';
    if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on")
    {
        $pageURL .= "s";
    }
    $pageURL .= "://";
    $pageURL .= $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    return $pageURL;
}

/**
 * 
 * 當前頁面的url（不包括參數）
 */
public function getWebPath()
{
    $pageURL = 'http';
    if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on")
    {
        $pageURL .= "s";
    }
    $pageURL .= "://";
    $pageURL .= $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
    return $pageURL;
}

/**
 * 當前頁面的父路徑
 */
public function getWebParentPath()
{
    $pageURL = 'http';
    if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on")
    {
        $pageURL .= "s";
    }
    $pageURL .= "://";
    $pageURL .= $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
    $pageURL = substr($pageURL, 0, strrpos($pageURL, "/"));
    return $pageURL;
}

/**
 * 服務器名稱
 */
public function getServerName()
{
    return $_SERVER['SERVER_NAME'];
}

/**
 * 端口
 */
public function getServerPort()
{
    return $_SERVER["SERVER_PORT"];
}

/**
 * 鏈接參數，問號?后的參數
 */
public function getQueryString()
{
    return $_SERVER['QUERY_STRING'];
}

/**
 * 請求地址，返回值不host內容
 */
public function getRequestUri()
{
    return $_SERVER['REQUEST_URI'];
}

}
$http = new HttpTool();
echo "host===============".$http->getHost() . "<br/>";
echo "weburl=============".$http->getWebUrl() . "<br/>";
echo "webPath============".$http->getWebPath() . "<br/>";
echo "getWebParentPath===".$http->getWebParentPath() . "<br/>";
echo "getServerName======".$http->getServerName() . "<br/>";
echo "getServerPort======".$http->getServerPort() . "<br/>";
echo "getQueryString=====".$http->getQueryString() . "<br/>";
echo "getRequestUri======".$http->getRequestUri() . "<br/>";
?></pre> 

 測試地址：http://localhost:8081/test/httptool.php?name=penngo
 輸出結果： 
 
 host===============localhost:8081
 weburl=============http://localhost:8081/test/httptool.php?name=penngo
 webPath============http://localhost:8081/test/httptool.php
 getWebParentPath===http://localhost:8081/test
 getServerName======localhost
 getServerPort======8081
 getQueryString=====name=penngo
 getRequestUri======/test/httptool.php?name=penngo