我正在嘗試 (1) 上傳影像檔案 (2) 調整大小并將其居中并 (3) 更改檔案名并 (4) 將其移動到 /public 目錄。

這是我的代碼的一部分；

$path = $this->request->getFile('dh_site_logo')->store();
            
$temp_file_path = WRITEPATH.'uploads/' . $path;

service('image')
    ->withFile($temp_file_path)  // must include full path
    ->fit(250,150,'center')
    ->save($temp_file_path);
            
$public_file_path = ROOTPATH.'public';
$file_to_upload = 'site_logo.'.$update_post->guessExtension();;
$overwrite = true;      
        
$update_post->move($public_file_path, $file_to_upload, $overwrite);

我假設在writable/uploads移動到之前我必須在目錄中進行影像處理/public

我似乎無法鎖定已使用新的隨機名稱上傳的檔案，操作然后移動。

這個也試過

            // example of return $path = "20220130/1643544458_5a528551d1fe83c88e02.gif"
            $path = $this->request->getFile('dh_site_logo')->store('site_logo', 'site_logo.gif');
            
            $temp_file_path = WRITEPATH.'uploads/' . $path;

             service('image')
                ->withFile($temp_file_path)  // must include full path
                ->fit(250,150,'center')
                ->save($temp_file_path);
            
            $public_file_path = ROOTPATH.'public';
            $new_file_name = 'site_logo.gif';
            $overwrite = true;      
        
            $update_post->move($public_file_path, $new_file_name, $overwrite);

以上給我一個錯誤，The uploaded file has already been moved

uj5u.com熱心網友回復：

Ci4 / 影像上傳和操作錯誤 / finfo_file(/tmp/phpSrVWUZ): 無法打開流: 沒有這樣的檔案或目錄

問題1：

由于以下代碼行，您收到上述錯誤：

$file_to_upload = 'site_logo.'.$update_post->guessExtension();;

解釋一：

在下面的第一行代碼中：

$path = $this->request->getFile('dh_site_logo')->store();

您正在呼叫CodeIgniter\HTTP\Files\UploadedFile::store(?string $folderName = null, ?string $fileName = null)方法，它將上傳的檔案 ( /tmp/phpSrVWUZ) 保存到新位置。

即：該store(...)方法將上傳的檔案從服務器的默認臨時目錄（/tmp）移動到專案的上傳目錄（WRITEPATH . 'uploads/'）。

然后，您嘗試呼叫$update_post->guessExtension()忘記UploadedFile實體$update_post仍然參考舊的不存在路徑 ( /tmp/phpSrVWUZ)，因此出現錯誤。

更具體地說，方法CodeIgniter\HTTP\Files\UploadedFile::guessExtension()呼叫另一個方法CodeIgniter\Files\File::getMimeType()。該方法getMimeType(...)嘗試使用下面的代碼片段在不存在的檔案上檢索 mime 型別，從而導致錯誤：

finfo_file(finfo_open(FILEINFO_MIME_TYPE), "/tmp/phpSrVWUZ");

// PHP Warning:  finfo_file(/tmp/phpSrVWUZ): Failed to open stream: No such file or directory in ...

=========

問題2：

這個也試過

...

以上給我一個錯誤，The uploaded file has already been moved

解釋二：

您通常會收到此錯誤，因為您多次嘗試將上傳的檔案移動到新位置。

當您多次呼叫CodeIgniter\HTTP\Files\UploadedFile::store(...)or方法時會發生這種情況。CodeIgniter\HTTP\Files\UploadedFile::move(...)

摘自 CI 4.x源代碼。

/**
 * Move the uploaded file to a new location.
 * ...
 * If this method is called more than once, any subsequent calls MUST raise
 * an exception.
 * ...
 */
public function move(...): bool {
// ...
        if ($this->hasMoved) {
            throw HTTPException::forAlreadyMoved();
        }
// ...

}

更具體地說，每個UploadedFile實體都有一個名為的屬性，一旦上傳的檔案從服務器的默認臨時目錄成功移動，該屬性protected $hasMoved = false;就會更新：true

摘自 CI 4.x源代碼。

    /**
     * Returns whether the file has been moved or not. If it has,
     * the move() method will not work and certain properties, like
     * the tempName, will no longer be available.
     */
    public function hasMoved(): bool;

解決方案 A：

如果您不關心原始上傳的檔案并且您只對駐留在“公共”路徑中的最終轉換/調整大小的檔案感興趣，這適用。

public function createThumbnail(\CodeIgniter\HTTP\Files\UploadedFile $uploadedFile, ?string $newThumbnailFileName = null, int $width = 250, int $height = 150, string $position = "center"): ?\CodeIgniter\Files\File
{
    if (!$uploadedFile->isValid()) {
        return null;
    }

    $newThumbnailFileName = $newThumbnailFileName
        ? ((($point = strrpos($newThumbnailFileName, ".")) === false) ? $newThumbnailFileName : substr($newThumbnailFileName, 0, $point)) . $uploadedFile->guessExtension()
        : $uploadedFile->getRandomName();

    $targetPath = ROOTPATH . 'public' . DIRECTORY_SEPARATOR . $newThumbnailFileName;

    \Config\Services::image()
        ->withFile($uploadedFile->getRealPath() ?: $uploadedFile->__toString())
        ->fit($width, $height, $position)
        ->save($targetPath);

    return new \CodeIgniter\Files\File($targetPath, true);
}

上面的函式基本上保持服務器默認臨時目錄中的原始上傳檔案不變，并處理保存在專案的“公共”路徑中的新影像。

解決方案 A 的用法：

上面的函式回傳一個代表新轉換影像的CodeIgniter\Files\File實體。IE：

$requestFileName = "dh_site_logo";
$uploadedFile = $this->request->getFile($requestFileName);

// Generates a thumbnail in the 'public' path with a uniquely generated filename.
$thumbnail = $this->createThumbnail(
    uploadedFile: $uploadedFile
);

// OR

// Generates a thumbnail in the 'public' path with a custom filename ('site_logo').
$thumbnail = $this->createThumbnail(
    uploadedFile: $uploadedFile,
    newThumbnailFileName: "site_logo"
);

// OR

// You can modify the default parameters as well.
$thumbnail = $this->createThumbnail(
    uploadedFile: $uploadedFile,
    width: 100,
    height: 150,
    position: "left"
);

解決方案 B：

這適用于由于某種原因您想要轉換/調整大小并將修改后的影像保存在類似于解決方案 A的“公共”路徑中，并且仍然保留/保留或將原始上傳的檔案從服務器的臨時目錄移動到專案writable/uploads檔案夾以供將來參考或目的。

提示：如果該檔案沒有被移走或重命名，則該檔案將在請求結束時從臨時目錄中洗掉。-摘自 PHP 檔案： 示例 #2 驗證檔案上傳

腳步：

1. 根據需要生成盡可能多的縮略圖（轉換后的檔案）。
2. 最后，將上傳的檔案從服務器的默認臨時目錄移動到專案的writable/uploads檔案夾中。

$requestFileName = "dh_site_logo";
$uploadedFile = $this->request->getFile($requestFileName);

// 1. Generate as many thumbnails (transformed files) as you need.

// Generates a thumbnail in the 'public' path with
// a uniquely generated filename.
$thumbnail = $this->createThumbnail(
    uploadedFile: $uploadedFile
);

// 2. Lastly, move the uploaded file from the server's default temporary
// directory to the project's 'writable/uploads' folder (I.e: $uploadedFile->store()).

if (!$uploadedFile->hasMoved()) {
    // The moved uploaded file.
    $file = new \CodeIgniter\Files\File(WRITEPATH . 'uploads/' . $uploadedFile->store(), true);
}

標籤：代码点火器 codeigniter-4

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