//获取当前的域名:
echo $_SERVER[‘SERVER_NAME‘];
//获取来源网址,即点击来到本页的上页网址
echo $_SERVER["HTTP_REFERER"];
$_SERVER[‘REQUEST_URI‘];//获取当前域名的后缀
$_SERVER[‘HTTP_HOST‘];//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:https://www.why114.com /blog/test.php?act=checkcode
//获取域名或主机地址
echo $_SERVER[‘HTTP_HOST‘]."
"; # www.why114.com
//获取网页地址
echo $_SERVER[‘PHP_SELF‘]."
"; #/blog/test.php
//获取网址参数
echo $_SERVER["QUERY_STRING"]."
"; #act=checkcode
//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‘];
#http://www.why114.com /blog/test.php?act=checkcode
//包含端口号的完整url
echo ‘http://‘.$_SERVER[‘SERVER_NAME‘].‘:‘.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
#http://www.qilucms.com :80/blog/test.php?act=checkcode
//只取路径
$url=‘http://‘.$_SERVER[‘SERVER_NAME‘].$_SERVER["REQUEST_URI"];
echo dirname($url);
#http://www.qilucms.com :80/blog