How can PHP error reporting settings impact the debugging process when trying to troubleshoot issues like email sending failures?

When troubleshooting email sending failures in PHP, error reporting settings can impact the debugging process by determining whether errors related to email sending are displayed or logged. To ensure that all errors related to email sending are displayed, it is recommended to set the error_reporting level to E_ALL and enable display_errors in the PHP configuration.

// Set error reporting level to display all errors
error_reporting(E_ALL);

// Enable displaying errors
ini_set('display_errors', 1);