woocommerce_loop_product_link │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_loop_product_link', 'wp_kama_woocommerce_loop_product_link_filter', 10, 2 );

/**
 * Function for `woocommerce_loop_product_link` filter-hook.
 * 
 * @param  $the_permalink 
 * @param  $product       
 *
 * @return 
 */
function wp_kama_woocommerce_loop_product_link_filter( $the_permalink, $product ){

	// filter...
	return $the_permalink;
}

$the_permalink

-

$product

-

Where the hook is called

$link = apply_filters( 'woocommerce_loop_product_link', get_the_permalink(), $product );

Where the hook is used in WooCommerce