WordPress at Your Fingertips
filter is not described

woocommerce_product_thumbnails_columns filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_thumbnails_columns', 'filter_function_name_278' );
function filter_function_name_278( $4 ){
	// filter...

	return $4;
}
$4
-

Where the hook is called

In file: /templates/single-product/product-image.php
woocommerce_product_thumbnails_columns
woocommerce/templates/single-product/product-image.php 27
$columns           = apply_filters( 'woocommerce_product_thumbnails_columns', 4 );

Where in WP core the hook is used WooCommerce

Usage not found.