How to upload multiple files in codeigniter 3.0.1

问题

How to upload multiple files in codeigniter 3.0.1. There are similar issues and solutions in stackoverflow but unfortunately non of them are helping to fix the issue I am facing.

This is the error message appearing You did not select a file to upload with my current code

view (addGallery)

<section>
    <h2>Add Gallery</h2>
        <?php echo form_open('Newsupload/gallery', ['id'=>'news', 'name'=>'news', 'method'=>'post','enctype'=>'multipart/form-data']) ?>

        <div class="grp width-50">
            <label for="name">Album Name</label>
            <input type="text" name="name" id="name" value="" placeholder="">
        </div>
        <div class="grp width-100">
            <div id="selectedFiles"></div>
            <input type="file" id="files" name="files[]" multiple size="20"><br/>
        </div>
        <?php if (isset($error)) {
            echo $error;
        } ?>
        <grp class="grp width-100">
            <button>Add</button>
        </grp>
    </form>
</section>

controller (gallery)

public function gallery()
{

    $this->load->library('upload');

    $files = $_FILES;
    $cpt = count($_FILES['files']['name']);
    for($i=0; $i<$cpt; $i++)
    {           
        $_FILES['files']['name']= $files['files']['name'][$i];
        $_FILES['files']['type']= $files['files']['type'][$i];
        $_FILES['files']['tmp_name']= $files['files']['tmp_name'][$i];
        $_FILES['files']['error']= $files['files']['error'][$i];
        $_FILES['files']['size']= $files['files']['size'][$i];    

        $this->upload->initialize($this->set_upload_options());
        // $this->upload->do_upload('files[]');
        if (!$this->upload->do_upload('files[]'))
        {  
            $error =['error' => $this->upload->display_errors()];
            $this->load->view('admin/addGallery', $error);
        }
    }
}
public function set_upload_options()
{
    $config['upload_path'] = getcwd().'/upload/';
    $config['allowed_types'] = 'gif|jpg|jpeg|png';
    $config['remove_spaces'] = true;
    return $config;
}

回答1:

By default codeIgniter doesn't support multi-file upload. So you can use this library CodeIgniter Multiple Upload Library

回答2:

I think you need to change this line:

if (!$this->upload->do_upload('files[]'))

to

if (!$this->upload->do_upload('files'))

回答3:

you did not pass file name to upload function.Try this.

if (!$this->upload->do_upload($_FILES['files']['name']))
        {  
            $error =['error' => $this->upload->display_errors()];
            $this->load->view('admin/addGallery', $error);
}

回答4:

try this:

      $files = $_FILES;
        $cpt = count($_FILES['files']['name']);
         for($i=0; $i<$cpt; $i++)
        {
        $_FILES['files']['name']= $files['files']['name'][$i];
        $_FILES['files']['type']= $files['files']['type'][$i];
        $_FILES['files']['tmp_name']= $files['files']['tmp_name'][$i];
         $_FILES['files']['error']= $files['files']['error'][$i];
         $_FILES['files']['size']= $files['files']['size'][$i];
        $this->upload->initialize($this->set_upload_options());
        $this->upload->do_upload();
        $fileName = $_FILES['files']['name'];
         $images[] = $fileName;

and make a function set_upload_options()

$config = array();
         $config['upload_path'] = './upload/'; //give the path to upload the image in folder
         $config['allowed_types'] = 'gif|jpg|png';
          $config['max_size'] = '0';
         $config['overwrite'] = FALSE;
  return $config;

For more Upload multiple files using codeigniter try this http://w3code.in/2015/09/upload-file-using-codeigniter/

回答5:

Please try bellow

for($i=0; $i<$cpt; $i++)
{           
    $_FILES['files'] =  $files[$i];
    $this->upload->initialize($this->set_upload_options());
    if (!$this->upload->do_upload('files'))
    {  
        $error =['error' => $this->upload->display_errors()];
        $this->load->view('admin/addGallery', $error);
    }
}

回答6:

You can upload multiple files with CodeIgniter in a single request. You just need to do do_upload() for each file. Here's one implementation. You can work it into a loop if needed.

    // Image upload Config
    $config['upload_path']   = './uploads/';
    $config['allowed_types'] = 'gif|jpg|jpeg|png';
    $config['max_size']      = '1000000';
    $config['encrypt_name']  = TRUE;
    $this->load->library('upload', $config);

    // Upload Files
    if ( $_FILES['first_file']['name'] && $this->upload->do_upload('first_file') ) {
        $first_file = $this->upload->data();
    }
    if ( $_FILES['second_file']['name'] && $this->upload->do_upload('second_file') ) {
        $second_file= $this->upload->data();
    }

回答7:

Just that i understood from the library $this->upload->do_upload('inputelementname') doesn't have to be input element name. It should be the key of files array.

So in this context this should work

if($_FILES){
              $filecount=count($_FILES['addmediaelement']['name']);
              for($i=0; $i<$filecount; $i++){
                  $_FILES['mediaelement']['name']=$_FILES['addmediaelement']['name'][$i];
                  $_FILES['mediaelement']['type']=$_FILES['addmediaelement']['type'][$i];
                  $_FILES['mediaelement']['tmp_name']=$_FILES['addmediaelement']['tmp_name'][$i];
                  $_FILES['mediaelement']['error']=$_FILES['addmediaelement']['error'][$i];
                  $_FILES['mediaelement']['size']=$_FILES['addmediaelement']['size'][$i];

                  $config['upload_path']=path/to/save/file;
                  $config['file_name']=filealternatename.extension;
                  $config['max_size']=MAXSIZE; //max size constant
                  $config['max_width']=MAXWIDTH; //max width constant
                  $config['max_height']=CMPMAXHEIGHT; //max height constant
                  $config['allowed_types']='jpg|png';

                  if(!is_dir($config['upload_path'])){
                      mkdir($config['upload_path'], 0775);
                  }
                  $this->upload->initialize($config);
                  $imageuploaderres[]=$this->upload->do_upload('mediaelement');
              }
          }

来源：https://stackoverflow.com/questions/32964931/how-to-upload-multiple-files-in-codeigniter-3-0-1