krokedil-product-documents-custom-icon.php

<?php
/**
 * Use together with Krokedil Product Documents pluign.
 * https://krokedil.com/product/krokedil-product-documents/
 *
 * Filter kpd_document_icon
 * In this example we change icons for xlxs, docx & svg files.
 *
 * @param string $icon_url The url to the icon.
 * @param string $file_type The attached document file type (pdf, jpg etc).
 * @param int    $post_id Current product post ID.
 * @param string $file_name The attached document file name.
 */
 
add_filter( 'kpd_document_icon', 'custom_kpd_document_icon', 10, 4 );
function custom_kpd_document_icon( $icon_url, $file_type, $post_id, $file_name ) {
    switch ( $file_type ) {
        case 'xlsx':
            $icon_url = 'https://mydomain.com/custom-xlsx.png';
            break;
        case 'docx':
            $icon_url = 'https://mydomain.com/custom-docx.png';
            break;
        case 'svg':
            $icon_url = 'https://mydomain.com/custom-svg.png';
            break;
    }
	return $icon_url;
}