top.location.href 顶级窗口的地址
this.location.href 当前窗口的地址
#测试网址: http://www.kevin-ying.com/blog/testurl.php?id=5
//获取域名或主机地址
echo $_SERVER['HTTP_HOST']."<br>"; #localhost
//获取网页地址
echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php
//获取网址参数
echo $_SERVER["QUERY_STRING"]."<br>"; #id=5
//获取用户代理
echo $_SERVER['HTTP_REFERER']."<br>";
//获取完整的url
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];
#http://localhost/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"];
#http://localhost:80/blog/testurl.php?id=5
//只取路径
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);
#http://localhost/blog
<?php echo basename($_SERVER['PHP_SELF']);
<?php echo $_SERVER['PHP_SELF'];
<?php
echo $_SERVER["REMOTE_ADDR"];
?>
<?php
// 定义一个函数getIP()
function getIP(){
global $ip;
if (getenv("HTTP_CLIENT_IP"))
$ip = getenv("HTTP_CLIENT_IP");
else if(getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if(getenv("REMOTE_ADDR"))
$ip = getenv("REMOTE_ADDR");
else $ip = "Unknow";
return $ip;
}
// 使用方法:
echo getIP();
?>
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