How to hide PHP Warnings and Notices in WordPress?

You can hide PHP Warnings and Notices in wordpress by using the WP_DEBUG constant in wp-config.php file or you can use php ini_set('display_errors','Off'); and ini_set('error_reporting', E_ALL ); functions to hide the php warnings and notices from the front-end of your website.

The ini_set function in PHP allows you to change the configuration settings of your PHP installation at runtime. The ini_set('display_errors','Off'), turns off the display of errors, while the ini_set('error_reporting', E_ALL ) function, sets the error reporting level to E_ALL, which reports all errors and warnings.

Hide PHP Warnings and Notices in wordpress using WP_DEBUG constant

WP_DEBUG constant is used to control the debugging mode in WordPress. By setting it to false in your wp-config.php file, you can turn off warnings and notices.

define('WP_DEBUG', false);
define('WP_DEBUG_DISPLAY', false);

The first line, WP_DEBUG, sets the WordPress debugging mode to off, and the second line, WP_DEBUG_DISPLAY, turns off the display of errors. This way, the warnings and notices will not be shown on the front-end of your website, but they will still be logged in the error logs.

Hide PHP Warnings and Notices in wordpress using ini_set function in wp-config.php

If the above method does not work then you can replace define('WP_DEBUG', true); with the below code in wp-config.php file which exists at the root of wordpress project directory.

ini_set('display_errors','Off');
ini_set('error_reporting', E_ALL );
define('WP_DEBUG', false);
define('WP_DEBUG_DISPLAY', false);

Enable debug logging in wordpress

wp-config.php

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);