[WILL THIS WORK?!]Codeigniter + Dropzone functionality check

        <?php echo form_open_multipart('pets/submit', 'id="lostPetForm"'); ?>

          <h6 class="form-section-header"><i class="fas fa-user fa-sm"></i> User info</h6>
          <div class="row">

            <div class="col-md">
              <div class="form-group input-group">
                <div class="input-group-prepend">
                  <span class="input-group-text field-req"><i class="fas fa-address-card"></i></span>
                </div>
                <input type="text" class="form-control inputDisabled" id="personName" name="personName" placeholder="Full name" value="">
              </div>
            </div>
            <div class="col-md">
              <div class="form-group input-group">
                <div class="input-group-prepend">
                  <span class="input-group-text field-req"><i class="fas fa-phone"></i></span>
                </div>
                <input type="number" min="0" class="form-control inputDisabled" id="personPhone" name="personPhone" placeholder="Phone number" value="" >
              </div>
            </div>
          </div>

        <div class="row">
          <div class="col-md-12">
            <div class="sortable text-center" id="inputPhotos">

            </div>
          </div>
          <div class="col-md-12">
            <div class="dropzone-previews"></div>
          </div>
        </div>
        <div class="row">
          <div class="col-lg mt-3">
            <button type="reset" class="btn btn-danger btn-block" form="lostPetForm"><i class="fas fa-broom"></i> Clear</button>
          </div>
          <div class="col-lg mt-3">
            <button type="submit" class="btn btn-primary btn-block" form="lostPetForm"><i class="fas fa-check"></i> Submit</button>
          </div>
        </div>
<?php echo form_close() ?>




// JS Code for dropzone + reorder
	$("#inputPhotos").dropzone({
		url: '#',
		autoProcessQueue : false,
		addRemoveLinks: true,
		dictRemoveFile: 'Αφαίρεση αρχείου'
	})

	$("#inputPhotos").sortable({
		items:'.dz-preview',
		cursor: 'move',
		opacity: 0.5,
		containment: '#inputPhotos',
		distance: 20,
		tolerance: 'pointer'
	});

// Controller
public function submit(){

    $this->form_validation->set_rules('personName', 'Your name', 'required');
    $this->form_validation->set_rules('personPhone', 'Your phone number', 'required');

    if($this->form_validation->run() === FALSE){
      echo validation_errors();
    } else {
      $pet_entry_id = random_string('numeric', 6);
      //Image uploading
      $config = array(
        'upload_path' => './assets/img/pets/' . $pet_entry_id,
        'encrypt_name' => TRUE,
        'allowed_types' => 'gif|jpg|jpeg|png',
        'max_size' => '1310720',
        'max_width' => '2048',
        'max_height' => '2048'
      );
      $this->load->library('upload', $config);
      $dir_exist = true; //Default value for dir existence

      if ( !is_dir('assets/img/pets/' . $pet_entry_id) ) {
        mkdir('./assets/img/pets/' . $pet_entry_id, 0777, true);
        $dir_exist = false; // dir not exist
      }

      if($this->input->post('petMorePhotos') && !empty($_FILES['files']['name'])){
        $filesCount = count($_FILES['files']['name']);
        for($i = 0; $i < $filesCount; $i++){
          $_FILES['file']['name']     = $_FILES['files']['name'][$i];
          $_FILES['file']['type']     = $_FILES['files']['type'][$i];
          $_FILES['file']['tmp_name'] = $_FILES['files']['tmp_name'][$i];
          $_FILES['file']['error']     = $_FILES['files']['error'][$i];
          $_FILES['file']['size']     = $_FILES['files']['size'][$i];

          $config = array(
            'upload_path' => './assets/img/pets/' . $pet_entry_id,
            'allowed_types' => 'gif|jpg|jpeg|png',
        	'max_size' => '1310720',
        	'max_width' => '2048',
        	'max_height' => '2048'
          );

          // Load and initialize upload library
          $this->load->library('upload', $config);
          $this->upload->initialize($config);

          // Upload file to server
          if($this->upload->do_upload('petMorePhotos')){
            // Uploaded file data
            $fileData = $this->upload->data();
            $uploadData[$i]['file_name'] = $fileData['file_name'];
            $uploadData[$i]['uploaded_on'] = date("Y-m-d H:i:s");
          }
        }

        if(!empty($uploadData)){
          // Insert files data into the database
          // $insert = $this->file->insert($uploadData);
        }
      }

      $this->pet_model->create_pet($image, $pet_entry_id);
      redirect('pets');
    }
    $this->render_page('pets/submit', $data);
  }