woocommerce_cart_contents_weight │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_cart_contents_weight', 'wp_kama_woocommerce_cart_contents_weight_filter' );

/**
 * Function for `woocommerce_cart_contents_weight` filter-hook.
 * 
 * @param  $weight 
 *
 * @return 
 */
function wp_kama_woocommerce_cart_contents_weight_filter( $weight ){

	// filter...
	return $weight;
}

$weight

-

Where the hook is called

return apply_filters( 'woocommerce_cart_contents_weight', $weight );

Where the hook is used in WooCommerce