fix date format

Author: floptwo

src/Maatwebsite/Excel/Excel.php

@@ -3,6 +3,7 @@
 use Config;
 use Maatwebsite\Excel\Readers\HTML_reader;
 use \PHPExcel_Shared_Date;
+use \PHPExcel_Style_NumberFormat;
 
 /**
  * Laravel wrapper for PHPEXcel
@@ -804,11 +805,21 @@ private function parseCells()
             // If the cell is a date time and we want to parse them
             if($this->formatDates !== false && PHPExcel_Shared_Date::isDateTime($this->cell))
             {
-                // Convert excel time to php date object
-                $value = PHPExcel_Shared_Date::ExcelToPHPObject($this->cell->getCalculatedValue());
-
                 // Format the date
-                $value = $value->format($this->dateFormat);
+                if ($this->formatDates !== false) 
+                {
+                    $value = PHPExcel_Shared_Date::ExcelToPHPObject($this->cell->getCalculatedValue());
+                    $value = $value->format($this->dateFormat);
+                }
+                else {
+                    $value = (string) PHPExcel_Style_NumberFormat::toFormattedString(
+                        $this->cell->getCalculatedValue(),
+                        $this->cell->getWorksheet()->getParent()
+                            ->getCellXfByIndex($this->cell->getXfIndex())
+                            ->getNumberFormat()
+                            ->getFormatCode()
+                    );
+                }
 
                 if($this->useCarbon)
                 {