## Runtime Configuration

The behaviour of the Apache PHP module is affected by settings in php.ini. Configuration settings from php.ini may be overridden by php_flag settings in the server configuration file or local .htaccess files.

Example #1 Turning off PHP parsing for a directory using .htaccess

    php_flag engine off

Apache configuration options
Name | Default | Changeable | Changelog
--- | --- | --- | ---
engine | "1" | PHP_INI_ALL |
child_terminate | "0" | PHP_INI_ALL |
last_modified | "0" | PHP_INI_ALL |
xbithack | "0" | PHP_INI_ALL |

For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

`engine` bool

  Turns PHP parsing on or off. This directive is really only useful in the Apache module version of PHP. It is used by sites that would like to turn PHP parsing on and off on a per-directory or per-virtual server basis. By putting `engine off` in the appropriate places in the httpd.conf file, PHP can be enabled or disabled.

`child_terminate` bool

  Specify whether PHP scripts may request child process termination on end of request, see also apache_child_terminate().

`last_modified` bool

  Send PHP scripts modification date as Last-Modified: header for this request.

`xbithack` bool

  Parse files with executable bit set as PHP regardless of their file ending.