<?php namespace App\Utils; use PHPExcel_Cell; use PHPExcel_Cell_DataType; use PHPExcel_Cell_IValueBinder; use PHPExcel_Cell_DefaultValueBinder; class CsvValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder { public function bindValue(PHPExcel_Cell $cell, $value = null) { if (is_numeric($value)) { $cell->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING); return true; } return parent::bindValue($cell, $value); } }