MongoDB\GridFS\Bucket::getFileIdForStream()

定义

MongoDB\GridFS\Bucket::getFileIdForStream()

Gets the file document's ID of the GridFS file associated with a stream.

function getFileIdForStream(resource $stream): mixed

参数

$stream ：资源

GridFS 流资源。

Return Values

The _id field of the metadata document associated with the GridFS stream. The return type will depend on the bucket's typeMap option.

错误/异常

MongoDB\GridFS\Exception\CorruptFileException if the file's metadata or chunk documents contain unexpected or invalid data.

MongoDB\Exception\InvalidArgumentException表示与参数或选项解析相关的错误。

MongoDB\ 驱动程序\Exception\RuntimeException 对于扩展级别的其他错误（例如连接错误）。

示例

<?php
$bucket = (new MongoDB\Client)->test->selectGridFSBucket();
$stream = $bucket->openUploadStream('filename');
$id = $bucket->getFileIdForStream($stream);
var_dump($id);
fclose($stream);

而输出将类似如下所示：

object(MongoDB\BSON\ObjectId)#3005 (1) {
  ["oid"]=>
  string(24) "5acfb37d7e21e83cdb3e1583"
}

另请参阅

• MongoDB\GridFS\Bucket::getFileDocumentForStream()