CodeIgniter 图片上传 - 无法显示错误消息

Question

这是我的上传模型

    function upload_avatar()
    {
        $id = $this->tank_auth->get_user_id();

        //config upload parameters and upload image
        $config = array(
            'allowed_types' => 'jpeg|jpg|png',
            'upload_path' => $this->upload_path,
            'max_size' => 2048,
            'encrypt_name' => TRUE,
            'overwrite' => FALSE,
        );
        $this->load->library('upload', $config);
        $this->upload->do_upload();

        //get upload data, config, resize uploaded image, save in avatars subfolder
        $image_data = $this->upload->data();

        if ($image_data['file_size'] < 2048) {

            $config = array(
                'source_image' => $image_data['full_path'],
                'new_image' => $this->upload_path . '/avatars',
                'maintain_ratio' => TRUE,
                'width' => 125,
                'height' => 125
            );
            $this->load->library('image_lib', $config);
            $this->image_lib->resize();

            //only burn avatar path to user_profiles table if no upload errors
            if (!$this->upload->display_errors()) {
                $data = array('avatar' => base_url() . 'images/avatars/' . $image_data['file_name']);
                $this->db->where('id', $id);
                $this->db->update('user_profiles', $data);
            }

            //delete the original file from server
            $this->load->helper('file');
            unlink($image_data['full_path']);

        } else {

    echo $this->upload->display_errors();

        }
    }

当我尝试上传大于 2MB 的文件时，无法让错误消息直接回显到浏览器。

公平地说，CI 会忽略这个大文件，并在文件小于 2MB 时正确上传。

唯一的问题是我无法在前端显示错误消息给用户一些反馈。

有什么想法吗？

Answer 1

$config['upload_path'] = 'uploads/category/'.$id.'/';
        //echo $file_name;die;
        //echo $config['upload_path'];
        $config['allowed_types'] = 'gif|jpg|jpeg|png';
        $config['max_size'] = '2048';
        $config['max_width'] = '1920';
        $config['max_height'] = '1280';
        $this->load->library('upload');
         foreach ($_FILES as $key => $value) {
            //print_r($key);

            if (!empty($key['name'])) {

                $this->upload->initialize($config);
                if (!$this->upload->do_upload($key)) {
                  // echo 'test';die;
//                    rmdir('uploads/category/'.$id);
                    $errors = $this->upload->display_errors();
                    flashMsg($errors);
                }
}
}

试试这个！！

Answer 2

您的post_max_size 限制是否小于 2MB？ (http://ca3.php.net/manual/en/ini.core.php#ini.post-max-size) 如果是这样，在调用您的代码之前文件可能已被丢弃。

更新：

如果你在 else 块中取出你的函数调用，然后放入一个 exit('too big');你能看到错误吗？如果是这样，您如何传递呼叫可能存在问题。