You have a PHP script and you are getting an error when trying to send an email. How would you troubleshoot this issue using mail functions?

To troubleshoot an error when sending an email using mail functions in PHP, you can check the error message returned by the error_get_last() function. This function retrieves the last PHP error message. By reviewing this error message, you can gain insights into the issue that occurred during the email sending process. Additionally, you can consider updating the PHP version and related extensions or reinstalling the mail server software if the issue persists. These troubleshooting steps can help identify and resolve errors encountered during the email sending operation in your PHP script.