WordPress: custom security measures for wp-config.php

wp-config.php

# Custom Security Measures by @voneff
# 
# Sources:
# @link https://gist.github.com/voneff/f66128aaacd350294e8a
# @link https://premium.wpmudev.org/blog/keeping-wordpress-secure-the-ultimate-guide
# @link https://kinsta.com/blog/wp-config-php/
# @link https://kittpress.com/wordpress-sicherheit-2-erste-konfiguration/
#

# Turn Off PHP Error Reporting:
error_reporting(0);
@ini_set(‘display_errors’, 0);

# Disable the Plugin and Theme Editor:
define( 'DISALLOW_FILE_EDIT', true );

# Activate minor WP Core updates
define( 'WP_AUTO_UPDATE_CORE', minor );

# Force SSL on Login and Admin Pages
define( 'FORCE_SSL_LOGIN', true );
define( 'FORCE_SSL_ADMIN', true );

# Block External URL Requests:
define( 'WP_HTTP_BLOCK_EXTERNAL', true );
define( 'WP_ACCESSIBLE_HOSTS', 
'*.wordpress.org, 
*.wordpress.com, 
*.geotrust.com, 
*.akismet.com, 
*.wordfence.com, 
ajax.googleapis.com, 
*.google-analytics.com, 
*.yoast.com, 
*.seedprod.com, 
wpml.org, 
*.wpml.org, 
d2salfytceyqoe.cloudfront.net, 
api.wp-types.com, 
d7j863fr5jhrr.cloudfront.net, 
api.wordpress.org, 
api.wpml.org, 
*.laikalaika.de, 
elegantthemes.com, 
*.elegantthemes.com, 
gravatar.com, 
*.gravatar.com' );