January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Content preview from PHP编程：第4版
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服务器信息
｜
191
$_COOKIE
包含作为请求中被传递的
cookie
值的部分，数组的键是
cookie
的名字。
$_POST
包含作为
POST
请求中参数的部分，数组的键是表单参数。
$_SERVER
包含网页服务器中有用的信息，下一节中会讲到。
$_FILES
包含上传文件的信息。
这些变量不仅仅是全局的，而且在函数定义内部也是可见的。
$_REQUEST
数组会自动被
创建。
$_REQUEST
数组是包含
$_GET
、
$_POST
和
$_COOKIES
所有信息的一个组合。
服务器信息
$_SERVER
数组包含大量有用的网页服务器信息，大部分信息来自
CGI
规范要求的环境变
量
注
1
。
这是一个来自
CGI
的完整的
$_SERVER
列表，包括一些示例值。
PHP_SELF
当前执行脚本的文件名，相对于文件根目录（例如，
/store/cart.php
）。你可能已
经注意到这在之前章节的示例中用过。这个变量在创建自引用脚本时非常有用，我
们很快会看到。
SERVER_SOFTWARE
服务器标识字符串（例如，
Apache/1.3.33 (Unix) mod_perl/1.26 PHP/ 5.0.4
）。
SERVER_NAME
用于自引用
URL
的主机名、
DNS
别名或
IP
地址（例如，
www.example.com
）。
GATEWAY_INTERFACE
服务器使用的
CGI
标准的版本（例如，
CGI/1.1
）。
SERVER_PROTOCAL
请求页面时通信协议的名称和版本（例如，
HTTP/1.1
）。
注
1
详情参见链接
7
。
192
｜
第
8
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.