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PHP中获取当前页面的URL

#测试网址:     http://www,ceshi.com/blog/testurl.php?id=5

//获取域名或主机地址 
echo $_SERVER['HTTP_HOST']."
"; //www,ceshi.com //获取网页地址 echo $_SERVER['PHP_SELF']."
";//blog/testurl.php //获取网址参数 echo $_SERVER["QUERY_STRING"]."
"; //id=5 //获取用户代理 echo $_SERVER['HTTP_REFERER']."
"; //获取完整的url echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']; echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']; 输出:http://www,ceshi.com/blog/testurl.php?id=5 //包含端口号的完整url echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; 输出:http://www,ceshi.com:80/blog/testurl.php?id=5 //只取路径 $url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]; echo dirname($url); 输出:http://www,ceshi.com/blog

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