😍Useful

// Disable Gutenberg Editor (use Classic Editor)
add_filter('gutenberg_can_edit_post', '__return_false', 5);
add_filter('use_block_editor_for_post', '__return_false', 5);

//Disable Widget Blocks (use Classic Widgets)
add_filter( 'use_widgets_block_editor', '__return_false' );

//Disable Widget Blocks (use Classic Widgets)
add_filter( 'use_widgets_block_editor', '__return_false' );

//Disable Emojis
add_action( 'init', function () {
	remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
	remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
	remove_action( 'wp_print_styles', 'print_emoji_styles' );
	remove_action( 'admin_print_styles', 'print_emoji_styles' );
	remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
	remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );
	remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );

	// Remove from TinyMCE.
	add_filter( 'tiny_mce_plugins', function ( $plugins ) {
		if ( is_array( $plugins ) ) {
			return array_diff( $plugins, array( 'wpemoji' ) );
		} else {
			return array();
		}
	} );

	// Remove from dns-prefetch.
	add_filter( 'wp_resource_hints', function ( $urls, $relation_type ) {
		if ( 'dns-prefetch' === $relation_type ) {
			$emoji_svg_url = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/2/svg/' );
			$urls          = array_diff( $urls, array( $emoji_svg_url ) );
		}

		return $urls;
	}, 10, 2 );
} );

// Disable core auto-updates
add_filter( 'auto_update_core', '__return_false' );
// Disable auto-updates for plugins.
add_filter( 'auto_update_plugin', '__return_false' );
// Disable auto-updates for themes.
add_filter( 'auto_update_theme', '__return_false' );

//Disable Login Screen Language Switcher
add_filter( 'login_display_language_dropdown', '__return_false' );

//Disable XML-RPC
add_filter( 'xmlrpc_enabled', '__return_false' );

//Remove WordPress Version Number
add_filter('the_generator', '__return_empty_string');

//Change "Howdy Admin" in Admin Bar
function wpcode_snippet_replace_howdy( $wp_admin_bar ) {

	// Edit the line below to set what you want the admin bar to display intead of "Howdy,".
	$new_howdy = 'Welcome,';

	$my_account = $wp_admin_bar->get_node( 'my-account' );
	$wp_admin_bar->add_node(
		array(
			'id'    => 'my-account',
			'title' => str_replace( 'Howdy,', $new_howdy, $my_account->title ),
		)
	);
}
add_filter( 'admin_bar_menu', 'wpcode_snippet_replace_howdy', 25 );

//Change Admin Panel Footer Text
add_filter(
	'admin_footer_text',
	function ( $footer_text ) {
		// Edit the line below to customize the footer text.
		$footer_text = 'Powered by <a href="https://www.evps.vn" target="_blank" rel="noopener">EVPS.VN</a>';
		
		return $footer_text;
	}
);

//Allow SVG uploads for administrator users.
add_filter(
	'upload_mimes',
	function ( $upload_mimes ) {
		// By default, only administrator users are allowed to add SVGs.
		// To enable more user types edit or comment the lines below but beware of
		// the security risks if you allow any user to upload SVG files.
		if ( ! current_user_can( 'administrator' ) ) {
			return $upload_mimes;
		}

		$upload_mimes['svg']  = 'image/svg+xml';
		$upload_mimes['svgz'] = 'image/svg+xml';

		return $upload_mimes;
	}
);

// Add SVG files mime check.
add_filter(
	'wp_check_filetype_and_ext',
	function ( $wp_check_filetype_and_ext, $file, $filename, $mimes, $real_mime ) {

		if ( ! $wp_check_filetype_and_ext['type'] ) {

			$check_filetype  = wp_check_filetype( $filename, $mimes );
			$ext             = $check_filetype['ext'];
			$type            = $check_filetype['type'];
			$proper_filename = $filename;

			if ( $type && 0 === strpos( $type, 'image/' ) && 'svg' !== $ext ) {
				$ext  = false;
				$type = false;
			}

			$wp_check_filetype_and_ext = compact( 'ext', 'type', 'proper_filename' );
		}

		return $wp_check_filetype_and_ext;

	},
	10,
	5
);
//Disable auto scale image 
add_filter( 'big_image_size_threshold', '__return_false' );