使用PHP Codeigniter上传多个文档

<form method="post" action="<?php echo base_url('upload/do_upload'); ?>" enctype="multipart/form-data">
    <input type="file" name="userfiles[]" multiple>
    <input type="submit" value="Upload">
</form>

<?php
class Upload extends CI_Controller {
    public function do_upload() {
        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'gif|jpg|png|pdf|doc|docx';
        $config['max_size'] = 2048;

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

        if (!$this->upload->do_upload('userfiles')) {
            $error = $this->upload->display_errors();
            // 处理上传失败的情况
        } else {
            $data = $this->upload->data();
            // 处理上传成功的情况
        }
    }
}
?>