What to do if php ini_set doesn't work

php ini_set does not work solutions: 1. Use the ".htaccess" file to modify post_max_size and other configurations; 2. Configure "AllowOverride All" in "httpd.conf".

The operating environment of this article: Windows7 system, PHP7.1 version, Dell G3 computer

Ini_set does not work

ini_set -- Set a value for a configuration option

1. Not all valid options in php.ini can be set with ini_set;

2. When An option can be set, but it is not available when a virtual host is set on the server.

php ini_set does not take effect?

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

The correct way is to use the .htaccess file:

php_value upload_max_filesize 1024M  
php_value post_max_size 1024M

To use For the .htaccess file to take effect, the site needs to be configured in httpd.conf: AllowOverride All

Reason: The modifiable range of upload_max_filesize is PHP_INI_PERDIR, which can be modified in php.ini, httpd.conf or .htaccess file, but Cannot be modified with ini_set().

Knowledge point:

Constant value meaning

PHP_INI_USER, 1, configuration options can be in the user's PHP script or Windows registry Set

PHP_INI_PERDIR, 2, configuration options can be configured in php.ini, .htaccess or httpd.conf

PHP_INI_SYSTEM, 4, configuration options can be configured in php.ini or httpd.conf Configuration

PHP_INI_ALL, 7. Configuration options can be set everywhere

PS:

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

And magic_quotes_runtime can be set using set_magic_quotes_runtime()

Recommended learning: "PHP Video Tutorial"

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