WC_Coupon::increase_usage_count │ public │ WC 1.0

Increase usage count for current coupon.

Method of the class: WC_Coupon{}

No Hooks.

Returns

null. Nothing (null).

Usage

$WC_Coupon = new WC_Coupon();
$WC_Coupon->increase_usage_count( $used_by, $order );
$used_by(string)
Either user ID or billing email.
Default: ''
$order(WC_Order)
If provided, will clear the coupons held by this order.
Default: null

WC_Coupon::increase_usage_count() code WC 10.5.0

woocommerce/includes/class-wc-coupon.php 
public function increase_usage_count( $used_by = '', $order = null ) {
	if ( $this->get_id() && $this->data_store ) {
		$new_count = $this->data_store->increase_usage_count( $this, $used_by, $order );

		// Bypass set_prop and remove pending changes since the data store saves the count already.
		$this->data['usage_count'] = $new_count;
		if ( isset( $this->changes['usage_count'] ) ) {
			unset( $this->changes['usage_count'] );
		}
	}
}