Laravel excel maatwebsite 3.1 import, date column in excel cell returns as unknown format number. How to solve this?

Question

By using Maatwebsite/Laravel-Excel version 3.1 to import excel sheet, here I faced an issue date time column of the excel sheet returns unknown number. How to solve this? Example : Consider Cell value "29/07/1989" and returns as "32178" when import.

Answer 1

Please use this simple snippet in your PHP code

$excel_date_cell = 36841;
$UNIX_DATE_FORMAT = ($excel_date_cell - 25569) * 86400;
$original_date_format = gmdate("Y-m-d", $UNIX_DATE_FORMAT);
dd($original_date_format); //2000-11-11

Answer 2

I have created a function to check the file extensions. which parse date as per the file extension

1. Controller code

      public function store(FileImportRequest $request)
      {
          try {
            Excel::import(new FileImport($request->file->extension()), $request->file);
            }catch (\Error $ex) {
                        throw new \Exception('Error:' . $ex->getMessage());
                    }
            }
   

2. Inside the FileImportRequest Class.

              public function rules()
                {
                    return [
                        'file' => 'required|file|mimes:csv,xlsx,xsl'
                    ];
                  }
   

3. Inside the FileImport class.

       protected  $extension;
   
        public function __construct($extension)
        {
            $this->extension = $extension;
        }   
   
        public function model(array $row)
        {
            return new FileImport([
                'expires_at' => $this->checkExtension($row[8]),
                'created_at' => $this->checkExtension($row[9]),
            ]);
        }
   
    private function  checkExtension($dateTime)
      {
          switch ($this->extension) {
              case 'csv':
                  return Carbon::parse($dateTime)->toDateTimeString();
                  break;
              case 'xlsx':
              case 'xsl':
                  return \PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($dateTime);
                  break;
          }
       }
   

Answer 3

In this case, You can refer my code. It is working well. <?php

namespace App\Imports;

use App\Models\Sale;
use Illuminate\Support\Facades\DB;
// use Maatwebsite\Excel\Concerns\WithHeadingRow;
use Maatwebsite\Excel\Concerns\ToModel;

class SalesImport implements ToModel
{
    /**
    * @param array $row
    *
    * @return \Illuminate\Database\Eloquent\Model|null
    */
    public function model(array $row)
    {
        return new Sale([
            "name" => $row[0],
            "birthday" => \PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($row[1]),
            "gender" => $row[2],
            "age" => $row[3],
            "card_type" => $row[4],
            "identify_no" => $row[5],
            "address" => $row[6],
            "phone" => $row[7],
            "email" => $row[8],
        ]);
    }
}

Answer 4

Simply use this function to store date.

use PhpOffice\PhpSpreadsheet\Shared;

public function collection(Collection $collection)
{
    $errors = $this->validateBulk($collection);
    if (!empty($errors)) {
        return;
    }

    $holidays = [];
    foreach ($collection as $col) {
        Validator::make($col->toArray(), $this->rules())->validate();
        $holidays[] = [
            'title' => $col['title'],
            'holiday_date' => Date::excelToDateTimeObject($col['holiday_date'])
                ->format('y-m-d'),
            'holiday_year' => Date::excelToDateTimeObject($col['holiday_date'])
                ->format('y'),
        ];
        $this->rows++;
    }
    
    Holidays::insert($holidays);
}

Answer 5

I tried the above solution but always get stuck with non-numeric value error

I manage to solve this using

---

$date = intval($row['value']);

\PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($date)->format('d/m/Y')

Answer 6

Based on Skyrem Brilliant's @skyrem-brilliant answer, I solved it this way:

<?php

//...

class YourExcelImport implements OnEachRow, WithValidation, WithHeadingRow
{
   // ...

    /**
     * Tweak the data slightly before sending it to the validator
     * @param $data
     * @param $index
     * @return mixed
     */
    public function prepareForValidation($data, $index)
    {
        //Fix that Excel's numeric date (counting in days since 1900-01-01)
        $data['your_date_column'] = \PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($data['your_date_column'])->format('Y-m-d');
        //...
    }

    /**
     * List the validation rules
     * @return array
     */
    public function rules(): array
    {
        return [
            'your_date_column'=>'required|date_format:Y-m-d',
            //..
        ];
    }
}
?>

That did the trick and the validation passes.

Answer 7

That "unknown number" is an excel timestamp, that way it stores the date and time data internally.

for example:

123213.0: it's just a date
213233.1233: is a date and time
0.1233: it's one hour

If you can map the cell and you know which column will always have a date / time / date-time you can use mapped cells or convert it manually, see: https://stackoverflow.com/a/59049044

Otherwise, if your need involves resolving datetime fields dynamically, I have written a method that is responsible for automatically detecting if the value is a datetime dynamically (regardless of whether or not you know if there will be a datetime in that column) or I have tried various data types and it works fine

   /**
 * @param Cell $cell
 * @param $value
 * 
 * @return boolean;
 */
public function bindValue(Cell $cell, $value)
{
    $formatedCellValue = $this->formatDateTimeCell($value, $datetime_output_format = "d-m-Y H:i:s", $date_output_format = "d-m-Y", $time_output_format = "H:i:s" );
    if($formatedCellValue != false){
        $cell->setValueExplicit($formatedCellValue, DataType::TYPE_STRING);
        return true;
    }

    // else return default behavior
    return parent::bindValue($cell, $value);
}


/**
 * 
 * Convert excel-timestamp to Php-timestamp and again to excel-timestamp to compare both compare
 * By Leonardo J. Jauregui ( @Nanod10 | siskit dot com )
 * 
 * @param $value (cell value)
 * @param String $datetime_output_format
 * @param String $date_output_format
 * @param String $time_output_format
 * 
 * @return $formatedCellValue
 */
private function formatDateTimeCell( $value, $datetime_output_format = "Y-m-d H:i:s", $date_output_format = "Y-m-d", $time_output_format = "H:i:s" )
{

    // is only time flag
    $is_only_time = false;
    
    // Divide Excel-timestamp to know if is Only Date, Only Time or both of them
    $excel_datetime_exploded = explode(".", $value);

    // if has dot, maybe date has time or is only time
    if(strstr($value,".")){
        // Excel-timestamp to Php-DateTimeObject
        $dateTimeObject = \PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($value);
        // if Excel-timestamp > 0 then has Date and Time 
        if(intval($excel_datetime_exploded[0]) > 0){
            // Date and Time
            $output_format = $datetime_output_format;
            $is_only_time = false;
        }else{
            // Only time
            $output_format = $time_output_format;
            $is_only_time = true;
        }
    }else{
        // Only Date
        // Excel-timestamp to Php-DateTimeObject
        $dateTimeObject = \PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($value);
        $output_format = $date_output_format;
        $is_only_time = false;
    }
        
    // Php-DateTimeObject to Php-timestamp
    $phpTimestamp = $dateTimeObject->getTimestamp();

    // Php-timestamp to Excel-timestamp
    $excelTimestamp = \PhpOffice\PhpSpreadsheet\Shared\Date::PHPToExcel( $phpTimestamp );
        
    // if is only Time
    if($is_only_time){
        // 01-01-1970 = 25569
        // Substract to match PhpToExcel conversion
        $excelTimestamp = $excelTimestamp - 25569;
    }

    /* 
    // uncoment to debug manualy and see if working
    $debug_arr = [
            "value"=>$value,
            "value_float"=>floatval($value),
            "dateTimeObject"=>$dateTimeObject,
            "phpTimestamp"=>$phpTimestamp,
            "excelTimestamp"=>$excelTimestamp,
            "default_date_format"=>$dateTimeObject->format('Y-m-d H:i:s'),
            "custom_date_format"=>$dateTimeObject->format($output_format)
        ];
        
    if($cell->getColumn()=="Q"){
        if($cell->getRow()=="2"){
            if(floatval($value)===$excelTimestamp){
                dd($debug_arr);
            }
        }
    }

    */
    
    // if the values match
    if( floatval($value) === $excelTimestamp ){
        // is a fucking date! ;)
        $formatedCellValue = $dateTimeObject->format($output_format);
        return $formatedCellValue;
    }else{
        // return normal value
        return false;
    }
    
}

Answer 8

Solved! This is the code I used to solve my problem:

Carbon\Carbon::instance(\PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($value));

Answer 9

The numbers come from excel itself, dates stored in excel as numeric values. http://www.cpearson.com/excel/datetime.htm

For Laravel framework 5.6 and maatwebsite/excel package version 3.1, to convert date from excel numbers to normal date format, this function PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($dateFromExcel) can be used. It accepts integer(excel date) and returns DateTime object.

More information can be found here https://github.com/Maatwebsite/Laravel-Excel/issues/1832

From this answer: https://stackoverflow.com/a/55139981/9133724