Custom tag %product_description% for Image Attributes Pro

iap-custom-tag-product-description

/**
 * Custom tag %product_description% for Image Attributes Pro
 * 
 * @param $image_id The ID of the image that is being updated. 
 * @param $parent_post_id The post to which the image is attached (uploaded) to. 
 * @param $args (array) An array containing additional arguments.
 * 
 * @return string WordPress post content. WooCommerce product long description is saved as post content.
 * 
 * @refer https://imageattributespro.com/codex/iaffpro_get_custom_attribute_tag_tagname/
 */
function iaffpro_get_custom_attribute_tag_product_description( $image_id, $parent_post_id, $args = array() ) {
	
	if ( $parent_post_id === 0 ) {
		return '';
	}

	$post = get_post( $parent_post_id );
	$content = substr( $post->post_content , 0, 20 ); // Change 20 to desired value to increase or decrease characters.

	return $content;
}