The fullstripe_before_subscription_charge Wordpress action

fullstripe_before_subscription_charge_v6-0.php

<?php
/**
 * A 'fullstripe_before_subscription_charge' action hook example for WP Full Stripe.
 * It blocks the subscripton if the quantity is less than 3.
 *
 * @param array $params with the following keys:
 *   email            => Email address of the customer
 *   urlParameters    => Array of URL parameters
 *   formName         => Name of the form the payment is being made on
 *   productName      => Name of the Stripe product being purchased
 *   planId           => Id of Stripe recurring price being purchased
 *   currency         => ISO code of the payment currency (eg. USD)
 *   amount           => Plan amount (it's in cents for non-zerodecimal currencies like the USD, EUR)
 *   setupFee         => Setup fee amount (it's in cents for non-zerodecimal currencies like the USD, EUR). Zero if there is no setup fee.
 *   quantity         => Number of plans purchased
 *   stripeClient     => Instance of the \StripeWPFS\StripeClient object, intialized in the same API mode as the current transaction  
 */

function beforeInlineSubscriptionCharge( $params ) {
    $amount = $params['quantity'];

    if ( $quantity < 3 ) {
        $ex = new WPFS_UserFriendlyException( "Please purchase at least 3 subscriptions" );
        $ex->setTitle( 'Not allowed' );     
        throw $ex;
    }
}

add_action('fullstripe_before_subscription_charge', 'beforeInlineSubscriptionCharge', 10    , 1 );