Example
WP_DEBUG_LOG is a companion to WP_DEBUG that causes all errors to also be saved to a debug.log log file inside the /wp-content/ directory. This is useful if you want to review all notices later or need to view notices generated off-screen (e.g. during an AJAX request or wp-cron run).
//enable
define( 'WP_DEBUG_LOG', true );
//disable
define( 'WP_DEBUG_LOG', false );
