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urlecho ‘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urlecho ‘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;