Debug
To enable debug mode:
define(‘WP_DEBUG’, true);
To display debug message as pages are generated:
define( ‘WP_DEBUG_DISPLAY’, true );
Will force WordPress to use non-minified versions of CSS and JS files:
define( ‘SCRIPT_DEBUG’, true );
Keeps a log of the database queries in an array ($wpdb->queries):
define(‘SAVEQUERIES’, true);