How can error_reporting settings impact PHP scripts and headers?

Error_reporting settings in PHP control the level of error reporting that PHP will display. This can impact PHP scripts by either hiding or displaying errors, warnings, or notices. By setting the error_reporting level appropriately, you can ensure that only necessary errors are displayed, which can improve security and performance of your PHP scripts.

// Set error reporting level to only display errors
error_reporting(E_ERROR);

// Alternatively, you can set error reporting to display all errors
error_reporting(E_ALL);