## Index → Cookbook

## Cookbook: Setting up PHP

There is not much to learn to configure PHP with Cherokee. Cherokee-admin ships a one-click wizard that will do everything for you. It will look for the PHP interpreter, it will check whether it support FastCGI, and then it’ll perform all the necessary operations to set it up on Cherokee. It is a piece of cake.

It requires a single operation to get PHP configured on a Virtual Server: Choose the virtual server your want to configure, and click on the `Behavior` tab. Once in there, click on `Wizards`:

Now select `Languages` and run the PHP wizard. And, that’s it. If you had `php-cgi` installed in your system, PHP should be configured now.

### PHP FastCGI support

Note that only FastCGI-enabled binaries of PHP will work with the FastCGI handler. Many prepackaged versions already enable this by default. If yours does not, you will need to build a suitable binary. You can check this with the `-v` parameter:

    $ php-cgi -v
    PHP 5.2.10 (cgi-fcgi) (built: Jul 11 2009 15:33:11)
    Copyright (c) 1997-2009 The PHP Group
    Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies

You cannot proceed unless the "cgi-fcgi" string is present.

### PHP process Environment Variables

The PHP_FCGI_CHILDREN environment variable is mandatory for PHP FastCGI servers. It defines how much children should serve the requests coming from the webserver.

If you define PHP_FCGI_MAX_REQUESTS, the value must be negative if you do not want the PHP process to ever be restarted. If you leave it unset, PHP will take the default value (500), after which it will be restarted. It is generally a good idea to let PHP be restarted to free up resources and possible memory leaks.

### Advanced configuration

Once PHP is configured, you are free to tweak the configuration to adapt it to your specific needs. You may want to change some of the php-cgi parameters, or even point Cherokee to use distributed PHP execution.

This example shows a typical usage of FastCGI. It only uses one information source nicknamed `php` in this case. This connects to a FastCGI server located in localhost in port 47990. If no server is running, the webserver will run the FastCGI server by issuing the command defined as the Interpreter sub-parameter:

This other example shows a typical usage of multiple FastCGI servers. It connects to FastCGI servers in several locations. If no server is running in the local computer, the webserver will run the FastCGI server by issuing the specified command. Note that for remote FastCGI servers, you are responsible of running the FastCGI services there manually: