<?php
/**
 * display favicon
 * version 2.0
 */
function SITEPREFIX_display_favicon()
{
    $pathtofavicon = get_template_directory_uri() . '/assets/img/favicon';?>

    <link rel="icon" type="image/png" sizes="192x192" href="<?php echo $pathtofavicon; ?>/android-chrome-192x192.png">
    <link rel="icon" type="image/png" sizes="512x512" href="<?php echo $pathtofavicon; ?>/android-chrome-512x512.png">
    <link rel="apple-touch-icon" sizes="180x180" href="<?php echo $pathtofavicon; ?>/apple-touch-icon.png">
    <link rel="icon" type="image/png" sizes="16x16" href="<?php echo $pathtofavicon; ?>/favicon-16x16.png">
    <link rel="icon" type="image/png" sizes="32x32" href="<?php echo $pathtofavicon; ?>/favicon-32x32.png">

<?php }
add_action('wp_head', 'SITEPREFIX_display_favicon');