url相关

#测试网址:     http://localhost/blog/testurl.php?id=5

//获取域名或主机地址 
echo$_SERVER['HTTP_HOST']."<br>"; #localhost

//获取本机ip地址

echo $_SERVER["REMOTE_ADDR"];die;

//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'].$_SERVER["REQUEST_URI"]; 
echodirname($url);
#http://localhost/blog

$url = "http://jingyan.baidu.com/article/295430f13434ee0c7e0050e5.html";

 

$arr = pathinfo($url);

 

var_dump($arr);die;