WooCommerce Change Default Placeholder image for Product page

/**
* @Title: WooCommerce Change Default Placeholder image for Product page
* @Author: Mina Pansuriya
* @Website: http://minapansuriya.com
*/
add_action( 'init', 'ccw_custom_woo_placeholder' );
function ccw_custom_woo_placeholder(){
add_filter('woocommerce_placeholder_img_src','pbs_woo_product_placeholder_img_src');
function pbs_woo_product_placeholder_img_src($src){
         // Here replace your image attachment ID with 2966
         $src = wp_get_attachment_url(2966);
         return $src;
	}
}