The php_flag directive can be used to set options that are specific to the php interpreter, directly from the .htaccess file. It is a good way to setup parameters across entire site, without having to repeat them in each php script or code.
The following code, turns off the register globals setting in php.
<IfModule mod_php5.c> #Turn off php register globals php_flag register_globals off </IfModule>
However, sometimes the following error might show up in /var/log/apache/error.log file.
.htaccess: php_flag not allowed here
To fix this error, add the following directive to apache site/host configuration file.
AllowOverride FileInfo Options
The default site configuration file for apache is located at this location
/etc/apache2/sites-available/default on most ubuntu/debian systems. You need to find the specific configuration file for your setup.
Here is an example
<Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride FileInfo Options Order allow,deny allow from all </Directory>