While going through a Zend tutorial, I came across the following statement:
Note that the php_flag settings in .htaccess only work if you are using mod_php.
Can someone explain what that means?
mod_php means PHP, as an Apache module.
Basically, when loading
mod_php as an Apache module, it allows Apache to interpret PHP files (those are interpreted by
There are (at least) two ways of running PHP, when working with Apache :
- Using CGI : a PHP process is launched by Apache, and it is that PHP process that interprets PHP code — not Apache itself
- Using PHP as an Apache module (called
mod_php) : the PHP interpreter is then kind of “embedded” inside the Apache process : there is no external PHP process — which means that Apache and PHP can communicate better.
using CGI or
mod_php is up to you : it’s only a matter of configuration of your webserver.
To know which way is currently used on your server, you can check the output of
phpinfo() : there should be something indicating whether PHP is running via
mod_php5), or via CGI.
You might also want to take a look at the
php_sapi_name() function : it returns the type of interface between web server and PHP.
If you check in your Apache’s configuration files, when using
mod_php, there should be a
LoadModule line looking like this :
LoadModule php5_module modules/libphp5.so
(The file name, on the right, can be different — on Windows, for example, it should be a