WordPress Functions.php | Favicon Frontend & Admin Option

functions-favicon-admin-client.php

<?php

// FAVICON ADDITION
function add_my_favicon() {
	if ( ! is_admin() ) {
	  //$favicon_path = get_site_url() . '/img/favicon-client.png';
	  $favicon_path = get_site_url() . '/i/favicon-client';
	} else {
		//$favicon_path = get_site_url() . '/img/favicon-admin.png';
	  $favicon_path = get_site_url() . '/i/favicon-admin';
	}
   echo
   	'<!-- generics -->
		<link rel="icon" href="' . esc_url($favicon_path) . '-32.png" sizes="32x32">
		<link rel="icon" href="' . esc_url($favicon_path) . '-57.png" sizes="57x57">
		<link rel="icon" href="' . esc_url($favicon_path) . '-76.png" sizes="76x76">
		<link rel="icon" href="' . esc_url($favicon_path) . '-96.png" sizes="96x96">
		<link rel="icon" href="' . esc_url($favicon_path) . '-128.png" sizes="128x128">
		<link rel="icon" href="' . esc_url($favicon_path) . '-192.png" sizes="192x192">
		<link rel="icon" href="' . esc_url($favicon_path) . '-228.png" sizes="228x228">
		
		<!-- Android -->
   	<link rel="shortcut icon" sizes="196x196" href="' . esc_url($favicon_path) . '-196.png" />
		
		<!-- iOS -->
		<link rel="apple-touch-icon" href="' . esc_url($favicon_path) . '-120.png" sizes="120x120">
		<link rel="apple-touch-icon" href="' . esc_url($favicon_path) . '-152.png" sizes="152x152">
		<link rel="apple-touch-icon" href="' . esc_url($favicon_path) . '-180.png" sizes="180x180">';
}
add_action( 'wp_head', 'add_my_favicon' ); //front end
add_action( 'admin_head', 'add_my_favicon' ); //admin end

?>