How to get all order ids of a customer in WooCommerce

If you want to find the orders of a WooCommerce customer , since orders are a custom post type in WooCommerce you could use get_posts.

Important parts to remember in your query:

For post type don't hardcode to "shop_order" but use wc_get_order_types() which will get all order types
For order_status use wc_get_order_statuses(), which will get all the WooCommerce order statuses
I added fields=>'ids' to only get the order ids since that was what I needed but you could remove this to get all order data
For numberposts I used -1 to get all the orders of this customer , but you could put a count such as 10
I used orderby date and order to get the recent orders first
I also check with is_user_logged_in function to see if this is a logged in user and not a visitor, before creating the query

	if(is_user_logged_in()){
	$cust_orders = get_posts( array(
	'numberposts' => -1,
	'meta_key' => '_customer_user',
	'meta_value' => get_current_user_id(),
	'fields' => 'ids',
	'post_type' => wc_get_order_types(),
	'post_status' => array_keys( wc_get_order_statuses() ),
	'orderby' => 'date',
	'order' => 'DESC'
	));
	}

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