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Codeigniter import excelsheet data using PHPSpreadSheet

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upload.php

<!DOCTYPE html>
<html>
<body>

<h2>Import</h2>

<form action="Upload/import" method="POST">
  <input type="file" name="file">
  <input type="submit" value="Submit">
</form> 

</body>
</html>

Upload.php(Controllers)

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

class Upload extends CI_Controller {

    public function __construct()
    {
        $this->load->library('form_validation');
    }
    public function import(){
        $file_mimes = array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'application/x-csv', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel', 'text/plain', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        
        if(isset($_FILES['upload_file']['name']) && in_array($_FILES['upload_file']['type'], $file_mimes)) {
            $arr_file = explode('.', $_FILES['upload_file']['name']);
            $extension = end($arr_file);
            if('csv' == $extension){
                $reader = new \PhpOffice\PhpSpreadsheet\Reader\Csv();
            }elseif('xls' == $extension){
                $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xls();
            }else {
                $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xlsx();
            }
            $spreadsheet = $reader->load($_FILES['upload_file']['tmp_name']);
            $sheetData = $spreadsheet->getActiveSheet()->toArray();
            echo "<pre>";
            print_r($sheetData);
            
        }
    }
}
?>

Upload.php(with database insert)

<?php
public function import(){
    $file_mimes = array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'application/x-csv', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel', 'text/plain', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
    
    if(isset($_FILES['upload_file']['name']) && in_array($_FILES['upload_file']['type'], $file_mimes)) {
        $arr_file = explode('.', $_FILES['upload_file']['name']);
        $extension = end($arr_file);
        if('csv' == $extension){
            $reader = new \PhpOffice\PhpSpreadsheet\Reader\Csv();
        }elseif('xls' == $extension){
            $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xls();
        }else {
            $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xlsx();
        }
        $spreadsheet = $reader->load($_FILES['upload_file']['tmp_name']);
        $sheetData = $spreadsheet->getActiveSheet()->toArray();
        if (!empty($sheetData)) {
            for ($i=1; $i<count($sheetData); $i++) {
                $project_name = $sheetData[$i][0];
                $file_no = $sheetData[$i][1];
                $team = $sheetData[$i][2];
                echo $team;
            }
        }
        
    }
}
?>
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