parse_url的用法，以及用途

parse_url类似于$_SERVER

它的用途是获取网址

相比而言，$_SRVER获取的网址的信息更多，更具体一些

下面说一下parse_url:

<?php

$Url='http://www.yidawang.net/index.html';
$tempu=parse_url($Url);
print_r($tempu);die;

打印的结果为：Array( [scheme] => http [host] => www.yidawang.net [path] => /index.html)

$message=$tempu['host'];
echo $message;

输出的结果为：www.yidawat_ng.net(域名)

?>

而$_SERVER

echo "<pre>";

print_r($_SERVER);

Array
(
    [PATH] => D:\phpStudy\php55n;C:\Users\59106\Desktop\node-v8.1.3-win-x64\node-v8.1.3-win-x64;E:\yu\vue\my-project;C:\Users\59106\AppData\Local\Microsoft\WindowsApps;
    [SYSTEMROOT] => C:\WINDOWS
    [COMSPEC] => C:\WINDOWS\system32\cmd.exe
    [PATHEXT] => .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
    [WINDIR] => C:\WINDOWS
    [PHP_FCGI_MAX_REQUESTS] => 1000
    [PHPRC] => D:/phpStudy/php55n
    [_FCGI_SHUTDOWN_EVENT_] => 2080
    [SCRIPT_NAME] => /test10.php
    [REQUEST_URI] => /test10.php
    [QUERY_STRING] => 
    [REQUEST_METHOD] => GET
    [SERVER_PROTOCOL] => HTTP/1.1
    [GATEWAY_INTERFACE] => CGI/1.1
    [REMOTE_PORT] => 54677
    [SCRIPT_FILENAME] => E:/wamp/www/test10.php
    [SERVER_ADMIN] => www.goods.com
    [CONTEXT_DOCUMENT_ROOT] => E:/wamp/www
    [CONTEXT_PREFIX] => 
    [REQUEST_SCHEME] => http
    [DOCUMENT_ROOT] => E:/wamp/www
    [REMOTE_ADDR] => 127.0.0.1
    [SERVER_PORT] => 80
    [SERVER_ADDR] => 127.0.0.1
    [SERVER_NAME] => www.goods.com
    [SERVER_SOFTWARE] => Apache/2.4.18 (Win32) OpenSSL/1.0.2e mod_fcgid/2.3.9
    [SERVER_SIGNATURE] => 
    [SystemRoot] => C:\WINDOWS
    [HTTP_UPGRADE_INSECURE_REQUESTS] => 1
    [HTTP_CONNECTION] => close
    [HTTP_DNT] => 1
    [HTTP_ACCEPT_ENCODING] => gzip, deflate
    [HTTP_ACCEPT_LANGUAGE] => zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
    [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    [HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0
    [HTTP_HOST] => www.goods.com
    [FCGI_ROLE] => RESPONDER
    [PHP_SELF] => /test10.php
    [REQUEST_TIME_FLOAT] => 1499823769.6059
    [REQUEST_TIME] => 1499823769
)