我想不出为什么ajax函数返回0了。我正在尝试获取条带支付，然后我的函数将尝试通过checkfront api进行预订。

在这一点上，任何想法或帮助都是非常受欢迎的！

下面是我的主题用于AJAX调用的函数：

add_action( \'wp_ajax_action_varaa_AJAX\', \'varaa_AJAX\' );
add_action(\'wp_ajax_nopriv_varaa_AJAX\', \'varaa_AJAX\');

function varaa_AJAX(){
  global $chargeID;
  global $bookingStatus;

  $amount = $_POST[\'amount\'];
  $token = $_POST[\'stripeToken\'];
  $name = $_POST[\'name\'];
  $cardName = $_POST[\'cardName\'];
  $email = $_POST[\'email\'];
  $phone = $_POST[\'phone\'];
  $accept_terms = $_POST[\'accept\'];
  $insurance = $_POST[\'insurance\'];
  $extradates = $_POST[\'extradates\'];
  $id = $_POST[\'session_id\'];
  $form = array(
    \'customer_name\' => $name,
    \'customer_email\' => $email,
    \'customer_phone\' => $phone,
    \'accept_terms\' => $accept_terms
  );

  function make_payment($token, $name, $cardName, $email, $phone, $amount, $insurance, $extradates) {
    require_once(get_template_directory() . \'vendor/stripe/stripe-php/init.php\');
    global $chargeID;

    $stripe_settings = get_option(\'stripe_settings\');

    // Set your secret key: remember to change this to your live secret key in production
    // See your keys here: https://dashboard.stripe.com/account/apikeys
      if(isset($stripe_settings[\'test_mode\']) && $stripe_settings[\'test_mode\']) {
          $secret_key = $stripe_settings[\'test_secret_key\'];
      } else {
          $secret_key = $stripe_settings[\'live_secret_key\'];
      }

      \\Stripe\\Stripe::setApiKey($secret_key);

    // ANONYYMI VARAUS

      // Create customer and assign charge with $token
        $customer = \\Stripe\\Customer::create(array(
            "source" => $token,
            "email" => $email,
            "description" => "Uusi anonyymi varaus.",
            "metadata" => [
              "nimi" => $name,
              "kortissa oleva nimi" => $cardName,
              "puhelin" => $phone,
              "insurance" => $insurance,
              "extradates" => $extradates
            ]
        ));

      // Get customer id from create above
        $stripeID = $customer->id;

      // Charge customer
        $charge = \\Stripe\\Charge::create(array(
          "amount" => $amount, // Amount in cents
          "currency" => "eur",
          "capture" => false,
          "customer" => $stripeID
        ));

      // Get charge id from charge above
        $chargeID = $charge->id;
  }

  // Create booking
    function create_booking($id, $form){
      require_once(get_template_directory() . \'lib/booking.php\');
      require_once(get_template_directory() . \'lib/form.php\');
      global $bookingStatus;
      global $bookingId;

      $Booking = new Booking();

      $bookIt = $Booking->create(
        array(
          \'session_id\' => $id,
          \'form\' => $form
        )
      );

      $bookingStatus = $bookIt[\'request\'][\'status\'];

      $bookingId = $bookIt[\'booking\'][\'booking_id\'];

      echo $bookIt;

    }

// Run functions above

  // Check WP nonce
    if ( 
        ! isset( $_POST[\'nonce\'] ) 
        || ! wp_verify_nonce( $_POST[\'nonce\'], \'bookNow\' ) 
    ) {

       print \'Sorry, your nonce did not verify.\';
       exit;

    } else {
    // Create a customer and charge card
      try {
          // Create charge
            make_payment($token, $name, $cardName, $email, $phone, $amount, $insurance, $extradates);

          // Create booking
            create_booking($id, $form);

          // Check if booking went through
            if ( $bookingStatus = \'OK\' ) {
              // Capture charge
                $ch = \\Stripe\\Charge::retrieve( $chargeID );
                $ch->capture();

              // Booking success  
                $value =  array(\'msg\' => \'success\', \'bookingStatus\' => $bookingStatus, \'bookingID\' => $bookingId );
                echo json_encode($value);

            } else {
              // Refund charge
                $re = \\Stripe\\Refund::create(array(
                  "charge" => $chargeID
                ));

              $value =  array(\'msg\' => \'error\' );
              echo json_encode($value);
            }

      } catch(\\Stripe\\Error\\Card $e) {
        // The card has been declined
          $value = array(\'error\' => true); // or $result = array(\'error\' => false);
          echo json_encode($value);
      }
    }
  die();
}

                      var token = response.id,
                          amount = vm.total * 100,
                          name = vm.form.name,
                          cardName = vm.form.cardName,
                          phone = vm.form.phone,
                          email = vm.form.email,
                          terms = vm.form.terms,
                          insurance  = vm.form.insurance,
                          action = \'varaa_AJAX\',
                          id = vm.sessionId;

                      var nonce = $(\'#ilmtrail_nonce\').val();
                      var extradates = Object.keys( vm.daysBetweenStartStop ).length * 25 - 25;

                          jQuery.ajax({
                            url: AJAXurl,
                            data: { action: action, nonce: nonce, stripeToken: token, insurance: insurance, extradates: extradates, name: name, phone: phone, email: email, cardName: cardName, amount: amount, accept: terms, session_id: id },
                            type: \'post\',
                            success: function(value) {
                              if ( value.msg === \'success\' ) {

                                console.log(value);
                                vm.form.sending = false;
                                vm.form.sent = true;
                                $(\'#receipt\').openModal();
                                return true;

                              } else{

                                alert (\'Jokin meni mönkään. Tarkista tiedot ja kokeile uudestaan, ja jos virhe toistuu ole yhteydessä meihin niin saadaan varaus läpi!\');
                                console.log(value);
                                vm.form.sending = false;
                                $form.find(\'.submit\').prop(\'disabled\', false);
                                return false;

                              }

                            },
                            error: function(data) {
                              vm.form.sending = false;
                              $form.find(\'.submit\').prop(\'disabled\', false); 
                              console.log(data);
                              alert (\'Jokin meni mönkään. Tarkista tiedot ja kokeile uudestaan, ja jos virhe toistuu ole yhteydessä meihin niin saadaan varaus läpi!\');
                              return false;
                            }
                          });