update

Author: sreichel

app/code/core/Mage/Adminhtml/Block/System/Config/Form/Field/Import.php

@@ -7,7 +7,7 @@
  * @package    Mage_Adminhtml
  */
 
-use Varien_Date as Date;
+use Carbon\Carbon;
 
 /**
  * Custom import CSV file field for shipping table rates
@@ -32,7 +32,7 @@ public function getElementHtml()
     {
         $html = '';
 
-        $html .= '<input id="time_condition" type="hidden" name="' . $this->getName() . '" value="' . Date::toTimestamp(true) . '" />';
+        $html .= '<input id="time_condition" type="hidden" name="' . $this->getName() . '" value="' . Carbon::now()->getTimestamp() . '" />';
 
         $html .= <<<EndHTML
         <script type="text/javascript">

app/code/core/Mage/Adminhtml/controllers/Sales/Order/ShipmentController.php

@@ -7,7 +7,7 @@
  * @package    Mage_Adminhtml
  */
 
-use Varien_Date as Date;
+use Carbon\Carbon;
 
 /**
  * Adminhtml sales order shipment controller
@@ -717,7 +717,7 @@ protected function _createPdfPageFromImageString($imageString)
 
         imageinterlace($image, 0);
         $tmpFileName = sys_get_temp_dir() . DS . 'shipping_labels_'
-                     . uniqid(random_int(0, mt_getrandmax()) . Date::toTimestamp(true) . '.png');
+                     . uniqid(random_int(0, mt_getrandmax()) . Carbon::now()->getTimestamp() . '.png');
         imagepng($image, $tmpFileName);
         $pdfImage = Zend_Pdf_Image::imageWithPath($tmpFileName);
         $page->drawImage($pdfImage, 0, 0, $xSize, $ySize);