What role does the web server (e.g. lighttpd) play in determining PHP configuration settings?

The web server, such as lighttpd, plays a role in determining PHP configuration settings by passing certain environment variables to PHP scripts. One common setting that can be influenced by the web server is the maximum upload file size allowed for PHP scripts. By configuring the web server correctly, you can ensure that PHP scripts have the necessary settings to function properly.

// Set maximum upload file size for PHP scripts
ini_set('upload_max_filesize', '10M');