Home >Backend Development >PHP Tutorial >php中使用$_REQUEST需要注意的一个问题_php实例

php中使用$_REQUEST需要注意的一个问题_php实例

WBOY
WBOYOriginal
2016-05-17 09:05:051141browse

问题
说起$_REQUEST,大家都知道的是它是$_GET和$_POST的集合。但是如果你有心的话,查一下文档,会看到:

$_REQUEST

An associative array that by default contains the contents of $_GET, $_POST and $_COOKIE.

这里说$_REQUEST默认是$_GET, $_POST, $_COOKIE的集合,结果我使用我本地的php查看了一下发现只有$_GET, $_POST, 没有$_COOKIE!! 难道文档是错的?

 

答案
其实changelog中有给出解释:

版本5.3以上,php.ini中有request_order属性来设置$_REQUEST。查了下php.ini, request_order设置成为了GP(Get and Post)。

 

request_order的官网描述:

request_order string

This directive describes the order in which PHP registers GET, POST and Cookie variables into the _REQUEST array. Registration is done from left to right, newer values override older values.

If this directive is not set, variables_order is used for $_REQUEST contents.

Note that the default distribution php.ini files does not contain the 'C' for cookies, due to security concerns.

 

原来是G,P,C分别代表Get,Post,Cookie,5.3以上的版本request_order默认是设置成GP的,并不包含C,即$_REQUEST默认只包含$_GET和$_POST !! (所以官网文档有一定的误导)。

 

也同时说一下G,P,C的先后顺序就是设置的array的覆盖顺序。

提醒下如果你是使用fpm-php实验的话,改了php.ini后你需要重启php-fpm

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn