PayPal\Api\AlternatePayment::setExternalCustomerId PHP Method

setExternalCustomerId() public method

The unique identifier of the payer
public setExternalCustomerId ( string $external_customer_id )
$external_customer_id string
    public function setExternalCustomerId($external_customer_id)
    {
        $this->external_customer_id = $external_customer_id;
        return $this;
    }