CodeIgniter 3：“您没有指定任何允许的文件类型。您尝试上传的文件类型是不允许的。”

Question

我正在尝试使用 CodeIgniter “上传”库进行文件上传，但每次我尝试上传内容时都会收到此错误：

“您没有指定任何允许的文件类型。您尝试上传的文件类型不被允许。”

我在 StackOverflow 上搜索并尝试了许多解决方案，但没有一个有效，这是我的代码：

views/screenshots.php

<form method="post" enctype="multipart/form-data" action="{baseurl}/upload/screenshot">
                    <input type="hidden" name="serverid" value="{id}" />
                    <label>Carica uno Screenshot</label>
                    <br />
                    <label class="custom-file" id="customFile" for="screenshot">
                        <input type="file" class="custom-file-input" id="screenshot" name="screenshot" aria-describedby="fileHelp">
                        <span class="custom-file-control form-control-file"></span>
                    </label>
                    <br />
                    <button type="submit" class="btn btn-secondary">Carica file</button>
                </form>

config/upload.php

$config['allowed_types'] = '*';
$config['max_size'] = 1024 * 8;
$config['encrypt_name'] = TRUE;

controllers/upload.php

public function screenshot()
{
    /* Upload library config */
    $config['upload_path'] = './files/screenshots/';
    $this->upload->initialize($config);

    /* Upload and check if it's failed */
    if (!$this->upload->do_upload('screenshot')) {
        $error = array('error' => $this->upload->display_errors());
        echo json_encode($error);
        print_r($this->upload->data());
    } else {
        /* Making an array with all the data of the upload */
        $upload_data = $this->upload->data();

        /* Making an array to pass to the Screenshot_model */
        $screenshot = array(
            'id_server' => $this->input->post('serverid'),
            'id_user' => $this->session->userdata('userid'),
            'image_url' => $upload_data('file_name')
        );

        /* Saving the Screenshot info into the database */
        $this->Screenshot_model->addScreen($screenshot);

        /* Redirect to Server edit */
        redirect('/screenshots/'.$screenshot['id_server']);
    }

}

print_r($this->upload->data()) 结果

Array ( [file_name] => download.png [file_type] => image/png [file_path] => C:/xampp/htdocs/gameparade/files/screenshots/ [full_path] => C:/xampp/htdocs/gameparade/files/screenshots/download.png [raw_name] => download [orig_name] => [client_name] => download.png [file_ext] => .png [file_size] => 1806 [is_image] => 1 [image_width] => [image_height] => [image_type] => [image_size_str] => )

我正在自动加载库。我的 CodeIgniter 版本是 3.1.6。我也尝试过使用 form_open_multipart();在视图中，但没有任何变化。

我在 Windows 10（PHP 版本 7.2.0）上使用 XAMPP 7.2.0。

Answer 1

manual 没有说'*' 可以用于所有类型。所以最好尝试改变这一点：

$config['allowed_types'] = '*';

到

$config['allowed_types'] = 'gif|jpg|png';

然后尝试使用其中一种文件类型。

根据official document，

allowed_types default = None, options = None 对应的mime类型 您允许上传的文件。通常可以使用文件扩展名 作为哑剧类型。用管道分隔多个类型。

Answer 2

替换：

$this->upload->initialize($config);

与：

$this->upload->initialize($config, false);

来自文档 (https://www.codeigniter.com/userguide3/libraries/file_uploading.html)：

初始化([数组 $config = array()[, $reset = TRUE]])

参数：

$config (array) – 首选项

$reset (bool) – 是否将首选项（$config 中未提供）重置为默认值