shortcode

shortcode.php

<?php
add_shortcode( 'shellers-top-category', 'shellers_top_category' );
/**
 * Show parent categories 
 * 
 * @author Radomir Panna
 * @version 1.0.0
 * @param array $attr 
 * @return $output
 */
function shellers_top_category ( $attr ) {
	$output = '';
	$a = shortcode_atts( array(
		'parents' => '0',
	), $attr );
	$sheller_categories = get_terms('product_cat', array('parent' => esc_attr($a['parents'])));
	if(!empty($sheller_categories)) {
		$output .= '<ul class="topcategory">';
		foreach($sheller_categories as $sheller_category) {
			$output .= '<li><a href="' . esc_url( get_term_link($sheller_category->term_id) ) . '">' . $sheller_category->name . '</a></li>'; 
		}
		$output .= '</ul>';
	}

	return $output;
}