I have seen a few posts that developers looking for a way to disable PHP notices or to disable PHP warnings showing up in WordPress.

Some tutorials suggest putting the following code at the top of wp-config.php file disables PHP errors:

error_reporting(0);

But unfortunately, this does not work, however, because when that file calls wp-settings.php at the bottom, the error reporting will be overridden by WordPress's own settings.

In order for the above line to work, it must come after the call to wp-settings.php or at the end of wp-config.php file, like below…

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');

error_reporting(0);

* If you want to enable WP_DEBUG, you will have to comment out this line otherwise it won't display any debugging errors.