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    <h3>Editing: class-wc-order-query.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Parameter-based Order querying
 * Args and usage: https://github.com/woocommerce/woocommerce/wiki/wc_get_orders-and-WC_Order_Query
 *
 * @package WooCommerce\Classes
 * @version 3.1.0
 * @since   3.1.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Order query class.
 */
class WC_Order_Query extends WC_Object_Query {

	/**
	 * Valid query vars for orders.
	 *
	 * @return array
	 */
	protected function get_default_query_vars() {
		return array_merge(
			parent::get_default_query_vars(),
			array(
				'status'               =&gt; array_keys( wc_get_order_statuses() ),
				'type'                 =&gt; wc_get_order_types( 'view-orders' ),
				'currency'             =&gt; '',
				'version'              =&gt; '',
				'prices_include_tax'   =&gt; '',
				'date_created'         =&gt; '',
				'date_modified'        =&gt; '',
				'date_completed'       =&gt; '',
				'date_paid'            =&gt; '',
				'discount_total'       =&gt; '',
				'discount_tax'         =&gt; '',
				'shipping_total'       =&gt; '',
				'shipping_tax'         =&gt; '',
				'cart_tax'             =&gt; '',
				'total'                =&gt; '',
				'total_tax'            =&gt; '',
				'customer'             =&gt; '',
				'customer_id'          =&gt; '',
				'order_key'            =&gt; '',
				'billing_first_name'   =&gt; '',
				'billing_last_name'    =&gt; '',
				'billing_company'      =&gt; '',
				'billing_address_1'    =&gt; '',
				'billing_address_2'    =&gt; '',
				'billing_city'         =&gt; '',
				'billing_state'        =&gt; '',
				'billing_postcode'     =&gt; '',
				'billing_country'      =&gt; '',
				'billing_email'        =&gt; '',
				'billing_phone'        =&gt; '',
				'shipping_first_name'  =&gt; '',
				'shipping_last_name'   =&gt; '',
				'shipping_company'     =&gt; '',
				'shipping_address_1'   =&gt; '',
				'shipping_address_2'   =&gt; '',
				'shipping_city'        =&gt; '',
				'shipping_state'       =&gt; '',
				'shipping_postcode'    =&gt; '',
				'shipping_country'     =&gt; '',
				'shipping_phone'       =&gt; '',
				'payment_method'       =&gt; '',
				'payment_method_title' =&gt; '',
				'transaction_id'       =&gt; '',
				'customer_ip_address'  =&gt; '',
				'customer_user_agent'  =&gt; '',
				'created_via'          =&gt; '',
				'customer_note'        =&gt; '',
			)
		);
	}

	/**
	 * Get orders matching the current query vars.
	 *
	 * @return array|object of WC_Order objects
	 *
	 * @throws Exception When WC_Data_Store validation fails.
	 */
	public function get_orders() {
		$args    = apply_filters( 'woocommerce_order_query_args', $this-&gt;get_query_vars() );
		$results = WC_Data_Store::load( 'order' )-&gt;query( $args );
		return apply_filters( 'woocommerce_order_query', $results, $args );
	}
}
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