Debugging config for production - Error reporting

config.php

<?php
/**
 * Debugging in production
 *
 * - Set error reporting to true
 * - But don't display the errors
 * - Instead log the errors in a file
 */

// For PHP 
// error_reporting(E_ALL);
@ini_set( 'log_errors', 'On' );
@ini_set( 'display_errors', 'Off' );
@ini_set( 'error_log', 'DIR_NAME/php_error.log' );

/**
 * For WordPress
 */
define( 'WP_DEBUG', true );           // Enable WP_DEBUG mode
define( 'WP_DEBUG_DISPLAY', false );  // Disable display of errors and warnings 
define( 'WP_DEBUG_LOG', true );       // Enable Debug logging to the /wp-content/debug.log file
// define( 'SCRIPT_DEBUG', true );       // Use dev versions of core JS and CSS files
// define( 'SAVEQUERIES', true );        // Enable saving all database queries to an array