How can one troubleshoot a "Maximum execution time exceeded" error in PHP?

The "Maximum execution time exceeded" error in PHP occurs when a script takes longer to execute than the maximum time allowed by the server configuration. To troubleshoot this issue, you can increase the maximum execution time limit in your PHP configuration settings or optimize your code to reduce the execution time.

// Increase the maximum execution time limit to 60 seconds
ini_set('max_execution_time', 60);