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php文件上传之php.ini配置上传文件详解

Jun 13, 2016 am 10:16 AM
php php.ini upload document friend want Detailed explanation Configuration

可能很多的朋友都不知道php文件上传如果要做得安全又方便我们是需要配置php.ini中的一些关于文件上传参数的,下面我来给大家介绍一些常见的参数配置方法。

修改php.ini这个选项,网上有很多的教程,可以随便搜。
 
1、先用root账号,登录到nobody的账户。
2、然后用whereis php命令查看,php.ini所在的位置,修改这个php.ini的文件就可以了。
3、最后重启apache,就可以生效了。

这里的nobody账户就是apache使用的账户,权限很低。
这里主要注意的问题就是你修改的配置文件必须是nobody所使用的配置文件。
一般情况下,修改了配置但是没有生效,可以考虑一下机器上是不是有多份配置。

配置与文件上传有关的参数


所有这些参数都在php.ini中配置。

1.file_uploads
设为On,允许通过HTTP上传文件

2.upload_tmp_dir
文件上传至服务器时用于临时存储的目录,如果没指定,系统会使用默认的临时文件夹(我的机器是/tmp)。

3.upload_max_filesize
允许上传文件大小的最大值,默认为2M。

4.post_max_size
Php可接收的post数据的最大值(包括表单里的所有值的总合),默认为8M。

5.memory_limit
每个php所最占的最大内存数,这个值要大于允许上传的文件大小。

6.max_execution_time
每个php运行的最长时间(秒),默认30秒。

7.max_input_time
Php解析POST/GET数据的最长时间(秒),默认60秒。

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