如何在codeigniter中显示1分钟前上传的图片

public function upload_image() {
    $config['upload_path'] = './uploads/'; // 设置上传文件的保存路径
    $config['allowed_types'] = 'gif|jpg|png'; // 设置允许上传的文件类型
    $config['max_size'] = 2048; // 设置允许上传的最大文件大小（单位：KB）

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

    if (!$this->upload->do_upload('image')) {
        // 上传失败，处理错误信息
        $error = $this->upload->display_errors();
        echo $error;
    } else {
        // 上传成功，获取上传文件的信息
        $data = $this->upload->data();
        $file_name = $data['file_name'];

        // 保存图片信息到数据库中
        $this->load->model('image_model');
        $this->image_model->save_image($file_name);

        redirect('image/view');
    }
}

<?php
    $this->load->helper('url');
    $this->load->model('image_model');
    $images = $this->image_model->get_images(); // 从数据库中获取所有图片信息

    foreach ($images as $image) {
        $upload_time = strtotime($image['upload_time']);
        $current_time = time();
        $time_diff = $current_time - $upload_time;

        if ($time_diff <= 60) { // 判断图片是否是1分钟前上传的
            $image_url = base_url('uploads/' . $image['file_name']);
            echo '<img src="' . $image_url . '" alt="Uploaded Image">';
        }
    }
?>