Disabling Strict Standards Errors in WordPress 3.7 with PHP 5.4

In Wordpress 3.7, the function wp_debug_mode (defined in wp-includes/load.php, and called from wp-setings.php) sets error_reporting( E_ALL ).

Since wp-settings.php is itself loaded at the end of wp-config.php, you cannot change this setting from wp-config.php (or rather, you can, but it will be overridden).

A solution is to create a "Must Use plugin", that is to say a .php file located in the /wp-content/mu-plugins/ folder containing :

<?phpif (WP_DEBUG && WP_DEBUG_DISPLAY) {   ini_set('error_reporting', E_ALL & ~E_STRICT & ~E_DEPRECATED);}

I found that only

error_reporting = off

works, as STRICT errors have become part of ALL as of PHP 5.4 which is annoying.

If you set WP_DEBUG to 'false' in wp-config.php file. These do not affect your website.

Bot the problem is that above does not work sometime.That can happen on cheap/shared hostings that force displaying PHP ERRORS, warnings and notices.In that case, you can remove this line from your wp-config.php file:

define('WP_DEBUG', false);

and place this:

ini_set('log_errors','On');ini_set('display_errors','Off');ini_set('error_reporting', E_ALL );define('WP_DEBUG', false);define('WP_DEBUG_LOG', true);define('WP_DEBUG_DISPLAY', false);

in my case its working.