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HomeBackend DevelopmentPHP TutorialPHP截取当前URL并获取当前页面想要的URL信息

PHP截取当前URL并获取当前页面想要的URL信息

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在PHP中获取当前页面的URL信息

<?  
//获取当前的域名:  
echo $_SERVER[&#39;SERVER_NAME&#39;];  
//获取来源网址,即点击来到本页的上页网址  
echo $_SERVER["HTTP_REFERER"];  
$_SERVER[&#39;REQUEST_URI&#39;];//获取当前域名的后缀  
$_SERVER[&#39;HTTP_HOST&#39;];//获取当前域名  
dirname(__FILE__);//获取当前文件的物理路径  
dirname(__FILE__)."/../";//获取当前文件的上一级物理路径  
?>
#测试网址:     http://www.php.cn/blog/test.php?act=checkcode

//获取域名或主机地址 
echo $_SERVER[&#39;HTTP_HOST&#39;]."<br>"; #www.php.cn

//获取网页地址 
echo $_SERVER[&#39;PHP_SELF&#39;]."<br>"; #/blog/test.php

//获取网址参数 
echo $_SERVER["QUERY_STRING"]."<br>"; #act=checkcode

//获取用户代理 
echo $_SERVER[&#39;HTTP_REFERER&#39;]."<br>"; 

//获取完整的url
echo &#39;http://&#39;.$_SERVER[&#39;HTTP_HOST&#39;].$_SERVER[&#39;REQUEST_URI&#39;];
echo &#39;http://&#39;.$_SERVER[&#39;HTTP_HOST&#39;].$_SERVER[&#39;PHP_SELF&#39;].&#39;?&#39;.$_SERVER[&#39;QUERY_STRING&#39;];
# http://www.php.cn/blog/test.php?act=checkcode

//包含端口号的完整url
echo &#39;http://&#39;.$_SERVER[&#39;SERVER_NAME&#39;].&#39;:&#39;.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; 
# http://www.php.cn:80/blog/test.php?act=checkcode

//只取路径
$url=&#39;http://&#39;.$_SERVER[&#39;SERVER_NAME&#39;].$_SERVER["REQUEST_URI"]; 
echo dirname($url);
#http://www.php.cn:80/blog

 

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