How to Solve \'You Did Not Select a File to Upload\' Error When Uploading Multiple Files in CodeIgniter?

Multiple Files Upload in CodeIgniter

Problem:

Uploading multiple files using a single form element results in the error "You did not select a file to upload."

Solution:

The issue lies in the initialization of the CodeIgniter upload library. When using the multiple attribute on the input field, it is necessary to adjust the library initialization to handle multiple files.

Modified Upload Method:

private function upload_files($path, $title, $files)
{
    $config = array(
        'upload_path'   => $path,
        'allowed_types' => 'jpg|gif|png',
        'overwrite'     => 1,
    );

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

    $images = array();

    foreach ($files['name'] as $key => $image) {
        $_FILES['images[]']['name']      = $files['name'][$key];
        $_FILES['images[]']['type']      = $files['type'][$key];
        $_FILES['images[]']['tmp_name']  = $files['tmp_name'][$key];
        $_FILES['images[]']['error']     = $files['error'][$key];
        $_FILES['images[]']['size']      = $files['size'][$key];

        $fileName = $title . '_' . $image;

        $images[] = $fileName;

        $config['file_name'] = $fileName;

        $this->upload->initialize($config);

        if ($this->upload->do_upload('images[]')) {
            $this->upload->data();
        } else {
            return false;
        }
    }

    return $images;
}

Explanation:

• Initialization: The upload library is initialized and configured to handle multiple files by defining multiple indices in $_FILES (i.e., images[]).
• Multipart Handling: The multiple attribute on the input field requires the server to handle multiple file uploads. The initialization adds the [] suffix to the input name, allowing multiple files to be posted.
• File Data: The foreach loop processes each file separately, initializing $_FILES with the corresponding data and setting the file_name as the title concatenated with the file name.
• Upload Process: Each file is uploaded using do_upload('images[]'), and successful uploads are added to the $images array.

By making these modifications, you will be able to upload multiple files successfully using the multiple attribute in your form.

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