PHP：在谷歌云存储中保存“动态文本或pdf内容”？

运行时：php

GCS文件上传流程：

$storage = new StorageClient();
$file = fopen($source, 'r');
$bucket = $storage->bucket($bucketName);
$object = $bucket->upload($file, [
  'name' => $objectName
]);

现在我想用动态文本/pdf 创建对象而不是使用$source路径文件。

例如：

$storage = new StorageClient();
$objectName = "newfile.txt";
$content = "This is the dynamic content";
$bucket = $storage->bucket($bucketName);
$object = $bucket->upload($content, [
    'name' => 'textDocs/'.$objectName
]);

因此它将创建新对象“newfile.txt”，内容为“这是动态内容”。

有没有任何云库或函数来处理这个？
提前致谢

对于在 Google 云存储中动态创建文本文档（带有动态内容），下面的代码将完美工作。

$storage = new StorageClient();
$objectName = "newfile.txt";                  // name of object/text-file
$content = "This is the dynamic content";     // assign static/dynamic data to $content variable
$bucket = $storage->bucket($bucketName);
$object = $bucket->upload($content, [
    'name' => 'textDocs/'.$objectName
]);

用于在 Google 云存储中动态创建 pdf 文档（带有动态内容）。

$name = "samplePDF.pdf";
$p = new PDFTable("L");
$p->AddPage();
$p->setfont('helvetica','',12);
$p->htmltable($html);
$pdfData = $p->output("",'S'); // returns pdf as string
$filename = "pdfDocs/".$name;
/** 
 * file uploading into google cloud storage : start
 */
$storage->bucket($bucketName, true)->upload(
    $pdfData,
    [
    'name' => $filename,
    'predefinedAcl' => 'publicRead'
    ]
);
/** 
 * file uploading into google cloud storage : end
 */
$p->output($name,"D"); // D->downloads file in our system.