如何使用codeigniter从多个输入上传文件

// 在视图文件中创建文件上传表单
<form method="post" action="upload_controller/upload_files" enctype="multipart/form-data">
    <input type="file" name="files[]" multiple>
    <input type="submit" value="Upload">
</form>

// 在控制器中处理文件上传请求
public function upload_files() {
    $this->load->library('upload');
    
    // 配置文件上传参数
    $config['upload_path'] = './uploads/';
    $config['allowed_types'] = 'gif|jpg|png';
    $config['max_size'] = 1024;
    
    // 处理每个上传的文件
    foreach ($_FILES['files']['name'] as $key => $filename) {
        $_FILES['userfile']['name'] = $_FILES['files']['name'][$key];
        $_FILES['userfile']['type'] = $_FILES['files']['type'][$key];
        $_FILES['userfile']['tmp_name'] = $_FILES['files']['tmp_name'][$key];
        $_FILES['userfile']['error'] = $_FILES['files']['error'][$key];
        $_FILES['userfile']['size'] = $_FILES['files']['size'][$key];
        
        // 执行文件上传
        $this->upload->initialize($config);
        if ($this->upload->do_upload('userfile')) {
            // 文件上传成功
            $data = $this->upload->data();
            // 处理上传文件的信息
            // ...
        } else {
            // 文件上传失败
            $error = $this->upload->display_errors();
            // 处理上传失败的情况
            // ...
        }
    }
}