WordPress at Your Fingertips
filter is not described

woocommerce_single_product_image_gallery_classes filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_single_product_image_gallery_classes', 'filter_function_name_6491' );
function filter_function_name_6491( $condition ){
	// filter...

	return $condition;
}
$condition
-

Where the hook is called

In file: /templates/single-product/product-image.php
woocommerce_single_product_image_gallery_classes
woocommerce/templates/single-product/product-image.php 29-37
$wrapper_classes   = apply_filters(
	'woocommerce_single_product_image_gallery_classes',
	array(
		'woocommerce-product-gallery',
		'woocommerce-product-gallery--' . ( $post_thumbnail_id ? 'with-images' : 'without-images' ),
		'woocommerce-product-gallery--columns-' . absint( $columns ),
		'images',
	)
);

Where in WP core the hook is used WooCommerce

Usage not found.