woocommerce_menu_order_count │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_menu_order_count', 'wp_kama_woocommerce_menu_order_count_filter' );

/**
 * Function for `woocommerce_menu_order_count` filter-hook.
 * 
 * @param  $wc_processing_order_count 
 *
 * @return 
 */
function wp_kama_woocommerce_menu_order_count_filter( $wc_processing_order_count ){

	// filter...
	return $wc_processing_order_count;
}

$wc_processing_order_count

-

Where the hook is called

$order_count = apply_filters( 'woocommerce_menu_order_count', wc_processing_order_count() );

Where the hook is used in WooCommerce