How to turn off PHP errors, notices and warnings within .htaccess

PHP errors, notices, and warnings may be turned off by adding the following code within a website’s .htaccess file:

php_flag display_errors off

Besides potentially interfering with a website’s visual appearance, it is generally not a good idea to display errors, notices, and warnings within a production environment for security reasons, since the error messages may provide useful information on a server / website’s configuration, and thus how to circumvent its security measures.