WordPress at a glance
filter is not described

woocommerce_cart_item_quantity filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_cart_item_quantity', 'filter_function_name_8008', 10, 3 );
function filter_function_name_8008( $product_quantity, $cart_item_key, $cart_item ){
	// filter...

	return $product_quantity;
}
$product_quantity
-
$cart_item_key
-
$cart_item
-

Where the hook is called

In file: /templates/cart/cart.php
woocommerce_cart_item_quantity
woocommerce/templates/cart/cart.php 121
echo apply_filters( 'woocommerce_cart_item_quantity', $product_quantity, $cart_item_key, $cart_item ); // PHPCS: XSS ok.

Where in WP core the hook is used WooCommerce

Usage not found.