How can error reporting and display settings in PHP be optimized to troubleshoot performance problems?

To troubleshoot performance problems in PHP, error reporting and display settings can be optimized by setting error reporting level to only show critical errors, hiding notices and warnings that may not be relevant to performance troubleshooting. This can help in identifying and focusing on the root cause of performance issues without being distracted by non-critical errors.

// Set error reporting level to only show critical errors
error_reporting(E_ERROR | E_PARSE);

// Hide notices and warnings
ini_set('display_errors', 0);