WordPress at a glance
filter is not described

woocommerce_stock_amount_cart_item filter-hook . WC 1.0

Sanitize.

Usage

add_filter( 'woocommerce_stock_amount_cart_item', 'filter_function_name_7862', 10, 2 );
function filter_function_name_7862( $wc_stock_amount, $cart_item_key ){
	// filter...

	return $wc_stock_amount;
}
$wc_stock_amount
-
$cart_item_key
-

Where the hook is called

WC_Form_Handler::update_cart_action()
woocommerce_stock_amount_cart_item
woocommerce/includes/class-wc-form-handler.php 670
$quantity = apply_filters( 'woocommerce_stock_amount_cart_item', wc_stock_amount( preg_replace( '/[^0-9\.]/', '', $cart_totals[ $cart_item_key ]['qty'] ) ), $cart_item_key );

Where in WP core the hook is used WooCommerce

Usage not found.