WordPress PHP debug global variable settings

wp-debug.php

<?php
/* WordPress debug globals (goes in wp-config.php).
 * For Dev sites only!
 * @ link https://premium.wpmudev.org/blog/debugging-wordpress-how-to-use-wp_debug/
 */
// Turn debugging on.
define( 'WP_DEBUG', true );

// Log PHP error messages to file: /wp-content/debug.log
define( 'WP_DEBUG_LOG', true );

// Turn off the display of error messages on your site.
define( 'WP_DEBUG_DISPLAY', false );

// Hide errors from being displayed on-screen.
@ini_set( 'display_errors', 0 );

?>