What potential issue is the user experiencing with the error-logging function in PHP?
The user is likely experiencing an issue where the error-logging function is not capturing all errors due to the error_reporting level being set too low. To solve this, the user should adjust the error_reporting level to include all types of errors by setting it to E_ALL.
// Adjust error_reporting level to capture all types of errors
error_reporting(E_ALL);
// Enable error logging to a specific file
ini_set('log_errors', 1);
ini_set('error_log', '/path/to/error.log');