disable emojis plugin

wp-content/mu-plugins/disable-emojis.php

+<?php
+/*
+Plugin Name: Disable Emojis
+Plugin URI: https://geek.hellyer.kiwi/plugins/disable-emojis/
+Description: Disable Emojis
+Version: 1.5.3
+Author: Ryan Hellyer
+Author URI: https://geek.hellyer.kiwi/
+License: GPL2
+
+------------------------------------------------------------------------
+Copyright Ryan Hellyer
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+
+/**
+ * Disable the emoji's
+ */
+function disable_emojis() {
+	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' );
+	add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' );
+	add_filter( 'wp_resource_hints', 'disable_emojis_remove_dns_prefetch', 10, 2 );
+}
+add_action( 'init', 'disable_emojis' );
+
+/**
+ * Filter function used to remove the tinymce emoji plugin.
+ * 
+ * @param    array  $plugins  
+ * @return   array             Difference betwen the two arrays
+ */
+function disable_emojis_tinymce( $plugins ) {
+	if ( is_array( $plugins ) ) {
+		return array_diff( $plugins, array( 'wpemoji' ) );
+	} else {
+		return array();
+	}
+}
+
+/**
+ * Remove emoji CDN hostname from DNS prefetching hints.
+ *
+ * @param  array  $urls          URLs to print for resource hints.
+ * @param  string $relation_type The relation type the URLs are printed for.
+ * @return array                 Difference betwen the two arrays.
+ */
+function disable_emojis_remove_dns_prefetch( $urls, $relation_type ) {
+	if ( 'dns-prefetch' == $relation_type ) {
+		/** This filter is documented in wp-includes/formatting.php */
+		$emoji_svg_url = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/2.2.1/svg/' );
+
+		$urls = array_diff( $urls, array( $emoji_svg_url ) );
+	}
+
+	return $urls;
+}