how to upload multiple files in one <input> - codeigniter

Question

I have made a code that let me upload multiple files but in separate
I was trying to upload a multiple files in one input where i set my input tag into
<input type="file" multiple="" name="file1">
I selected 3 images but only 1 image was uploaded..
here is my VIEW before changing my input:
<?php echo form_open_multipart('test'); ?>
<p>
<?php echo form_label('File 1: ', 'file1') ?>
<input type='file' name='file1' id='file1'>
</p>
<p>
<?php //echo form_label('File 2: ', 'file2') ?>
<input type='file' name='file2' id='file2'>
</p>
<p><?php echo form_submit('submit', 'Upload them files!') ?></p>
and here is my CONTROLLER
function index()
{
if (isset($_POST['submit']))
{
$this->load->library('upload');
$config['upload_path'] = './upload_documents/';
$config['allowed_types'] = 'jpg|png|gif|jpeg|JPG|PNG|GIF|JPEG';
$config['max_size'] = '0'; // 0 = no file size limit
$config['max_width'] = '0';
$config['max_height'] = '0';
$config['overwrite'] = TRUE;
$this->upload->initialize($config);
foreach($_FILES as $field => $file)
{
// No problems with the file
if($file['error'] == 0)
{
// So lets upload
if ($this->upload->do_upload($field))
{
$data = $this->upload->data();
//alert("nice");
}
else
{
$errors = $this->upload->display_errors();
die();
}
}
else{
echo "alksjdfl";
die();
}
}
}
$this->load->view("test");
}
}

Answer 1

Use this multi file upload library
https://github.com/stvnthomas/CodeIgniter-Multi-Upload/blob/master/MY_Upload.php
// Prepraing upload config & upload files
$config = array();
$config['upload_path'] = 'temp/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '256000';
$this->load->library('upload');
$this->upload->initialize($config);
$this->upload->do_multi_upload("my_file");
$files_upload = $this->upload->get_multi_upload_data();
$err_msg = $this->upload->display_errors();
if (!empty($files_upload) && is_array($files_upload)) {
foreach ($files_upload as $file_data) {
// Your files here :)
}
}
Special thanks to #stvnthomas for the library :)

Answer 2

You should use this library for multi upload in CI
https://github.com/stvnthomas/CodeIgniter-Multi-Upload
Installation
Simply copy the MY_Upload.php file to your applications library directory.
Use: function test_up in controller
public function test_up(){
if($this->input->post('submit')){
$path = './public/test_upload/';
$this->load->library('upload');
$this->upload->initialize(array(
"upload_path"=>$path,
"allowed_types"=>"*"
));
if($this->upload->do_multi_upload("myfile")){
echo '<pre>';
print_r($this->upload->get_multi_upload_data());
echo '</pre>';
}
}else{
$this->load->view('test/upload_view');
}
}
upload_view.php in applications/view/test folder
<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="myfile[]" id="myfile" multiple>
<input type="submit" name="submit" id="submit" value="submit"/>