Check Product is new (recent product)

check_new_product_woocommerce_wordpress.php

<?php 
// Function check product in woocommerce is new //
// Label "New" added after title product . Product on archive//
// Author: Nguyen Phuc Gia Linh //
// Contact: nguyenphucgialinh@gmail.com //
function check_id_last()
{
	$args = array( 'numberposts' => '1' ,
'post_type' => 'product',
'orderby' => 'ID',
    'order' => 'DESC',

		);
	$recent_posts = wp_get_recent_posts( $args );
	foreach( $recent_posts as $recent ){
		return $recent["ID"];
	}
}
function action_woocommerce_after_shop_loop_item_title(  ) 
{
    
global $post, $product;

 if ( $product->is_on_sale() ) : 
 echo '<img src="'.get_template_directory_uri().'/icon_km.gif"  class="img-km"/>';

 endif; 
	$maxid = (int) check_id_last();
	$proid= (int)  get_the_id();
	$hieu = $maxid - $proid;
	if($hieu<=5):
 		echo '<img src="'.get_template_directory_uri().'/icon_new.gif"  class="img-km"/>';
	endif;
};
        
// add the action
add_action( 'woocommerce_shop_loop_item_title', 'action_woocommerce_after_shop_loop_item_title', 10, 0 );
?>