What to do if PHP ini_set doesn't work

Solution to PHP ini_set not working: 1. Modify the htaccess file; 2. Configure "AllowOverride All" in httpd.conf.

The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

What should I do if PHP ini_set does not work?

The reason why PHP ini_set() is invalid:

In PHP configuration, post_max_size and upload_max_filesize cannot be modified using the ini_set() method.

The correct approach is to use the .htaccess file:

php_value upload_max_filesize 1024M  
php_value post_max_size 1024M

To make the .htaccess file take effect, you need to configure the site in httpd.conf: AllowOverride All

Reason: the modifiable range of upload_max_filesize It is PHP_INI_PERDIR, which can be modified in php.ini, httpd.conf or .htaccess files, but cannot be modified with ini_set().

Knowledge points:

PS:

magic_quotes_gpc is obtained with get_magic_quotes_gpc() and cannot be modified with set_magic_quotes_gpc because there is no such function.

And magic_quotes_runtime can be set with set_magic_quotes_runtime()

Recommended learning: "PHP Video Tutorial"

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