define(‘WP_DEBUG’, false); Not working?

Some times, the default debug not working due to the server settings or for some other function that overrides that define options for debugging!

Replace 
define('WP_DEBUG', false);

with 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)