Answers for "wp_debug show php warning"

wp_debug

// WP_DEBUG is a PHP constant (a permanent global variable) that can be used to trigger the "debug" mode throughout WordPress.
// WP_DEBUG_LOG and WP_DEBUG_DISPLAY are additional PHP constants that extend WP_DEBUG, and may also be used to debug WordPress.
 
define( 'WP_DEBUG', true );

wp_debug

define( 'WP_DEBUG', true ); // Debug Mode Enable
define( 'WP_DEBUG', false ); // Debug Mode Disable