WordPress at a glance
filter is not described

woocommerce_pay_order_product_in_stock filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_pay_order_product_in_stock', 'filter_function_name_7026', 10, 3 );
function filter_function_name_7026( $is_in_stock, $product, $order ){
	// filter...

	return $is_in_stock;
}
$is_in_stock
-
$product
-
$order
-

Where the hook is called

WC_Shortcode_Checkout::order_pay()
woocommerce_pay_order_product_in_stock
woocommerce/includes/shortcodes/class-wc-shortcode-checkout.php 149
if ( ! apply_filters( 'woocommerce_pay_order_product_in_stock', $product->is_in_stock(), $product, $order ) ) {

Where in WP core the hook is used WooCommerce

Usage not found.