在 PHP 上更改 load_max_filesize

我正在使用 PHP5.3.0，并且遇到了一些可能是 bug (在这种情况下我将报告它)或者可能是我的问题——所以我要求确认。

运行此代码时:

<?php
ini_set('upload_max_filesize', '10M');
echo ini_get('upload_max_filesize'), ", " , ini_get('post_max_size')

我的结局是:

2M, 8M

尽管我的 php.ini 设置得更高:

upload_max_filesize = 10M
post_max_size = 10M

(只发生一次)

因为错误发生在设置了 php.ini 中的值之后，所以我倾向于认为这是一个错误。有人能证实或告诉我哪里出了问题吗？

更新 : 看起来重新启动 Apache 修复了这个问题——我一直认为如果您更改了 php.ini，就不需要重新启动它。

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Are you using a shared hosting provider? It could be master settings overriding anything you're trying to change. Have you tried adding those into your .htaccess?

php_value upload_max_filesize 10M
php_value post_max_size 10M
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This can also be controlled with the apache configuration. Check the httpd.conf and/or .htaccess for something like the following:

php_value upload_max_filesize 10M
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最佳答案

You can't use shorthand notation to set configuration values outside of PHP.ini. I assume it's falling back to 2MB as the compiled default when confronted with a bad value.

On the other hand, I don't think upload_max_filesize could be set using ini_set(). The "official" list states that it is PHP_INI_PERDIR .

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if you use ini_set on the fly then you will find here http://php.net/manual/en/ini.core.php the information that e.g. upload_max_filesize and post_max_size is not changeable on the fly (PHP_INI_PERDIR).

Only a php.ini, .htaccess or vhost config change seems to change these variables.

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If you are running in a local server, such as wamp or xampp, make sure it's using the php.ini you think it is. These servers usually default to a php.ini that's not in your html docs folder.

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You can use also in the php file like this

<?php ini_set('upload_max_filesize', '200M'); ?>
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I got this to work using a .user.ini file in the same directory as my index.php script that loads my app. Here are the contents:

upload_max_filesize = "20M"
post_max_size = "25M"

This is the recommended solution for Heroku.

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Since I just ran in to this problem on a shared host and was unable to add the values to my .htaccess file I thought I'd share my solution.

I made an ini file with the values in it. Simple as that:

Make a file called ".user.ini" and add your values

upload_max_filesize = 150M
post_max_size = 150M

Boom, problem solved.

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I've faced the same problem , but I found out that not all the configuration settings could be set using ini_set() function , check this Where a configuration setting may be set

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This solution can be applied only if the issue is on a WordPress installation!

If you don't have FTP access or too lazy to edit files,

You can use Increase Maximum Upload File Size plugin to increase the maximum upload file size.

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Please be advised that setting a large post_max_size or upload_max_filesize for a complete server or a complete virtual host is not a good idea as it may lead to increased security risks.

The risk is that an attacker may send very large POST requests and overloading your server memory and CPU as it has to parse and process those requests before handling them to your PHP script.

So it's best to limit changing this setting to some files or directories. For example if I want to /admin/files/ and /admin/images/ I can use:

<If "%{REQUEST_URI} =~ m!^/admin/(files|images)/! && -n %{HTTP_COOKIE}">
php_value post_max_size 256M
php_value upload_max_filesize 256M
</If>

I also require the request to have a cookie to avoid basic attacks. This will not protect you against attacks coming from non-authenticated users, but may delay any attack.

This setting can be used in Apache server configuration files, and .htaccess files as well.


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