For multiple uploads storeUploads should be implemented.
But as we have possibility to use direct storeFile then it makes no sense because custom form was used anyway.
(PECL mongo >=0.9.0)
MongoGridFS::storeUpload — Stores an uploaded file in the database
name
The name of the uploaded file(s) to store. This should correspond to the file field's name attribute in the HTML form.
metadata
Other metadata fields to include in the file document.
Note:
These fields may also overwrite those that would be created automatically by the driver, as described in the MongoDB core documentation for the » files collection. Some practical use cases for this behavior would be to specify a custom chunkSize or _id for the file.
Note:
The filename field will be populated with the client's filename (e.g. $_FILES['foo']['name']).
Returns the _id of the saved file document. This will be a generated MongoId unless an _id was explicitly specified in the extra parameter.
Note:
If multiple files are uploaded using the same field name, this method will not return anything; however, the files themselves will still be processed.
Throws MongoGridFSException if there is an error reading the uploaded file(s) or inserting into the chunks or files collections.
| 版本 | 说明 |
|---|---|
| 1.2.5 | Changed second parameter to an array of metadata. Pre-1.2.5, the second parameter was an optional string overriding the filename. |
Example #1 MongoGridFS::storeUpload() HTML form example
Suppose you have the following HTML form:
<form method="POST" enctype="multipart/form-data">
<label for="username">Username:</label>
<input type="text" name="username" id="username" />
<label for="pic">Please upload a profile picture:</label>
<input type="file" name="pic" id="pic" />
<input type="submit" />
</form>
If you wanted to store the uploaded image in MongoDB, you could do the following in the script handling the form submission:
<?php
$m = new MongoClient();
$gridfs = $m->selectDB('test')->getGridFS();
$gridfs->storeUpload('pic', array('username' => $_POST['username']));
?>
For multiple uploads storeUploads should be implemented.
But as we have possibility to use direct storeFile then it makes no sense because custom form was used anyway.
For my PHP 7.0.27 this is incompatible to the "multiple" tag on inputs.
Like this:
<input type="file" name="files[]" multiple>
Please note that you need to use 'files[]', as else only one file is used from the uploaded files.
As documented, you need to give the Index into $_FILES as the first argument to this function. Like in:
foreach ($_FILES as $k=>$v)
$db->getGridFS()->storeUpload($k, $v);
However in the case of "multiple" selects, the corresponding entry in $_FILES[$k]["name"] is an array of filenames, not just a single filename. This is true even for a single file, in that case it is an array with just a single string in it.
In that case the function just silently fails. No error, no problem shown, it just becomes a NOP.
The workaround is:
- Without JavaScript, fallback to single file upload.
- With JavaScript add "multiple", and do the upload with Ajax file-by-file.
- As then only single files reach PHP, the problem is solved.
I am not able to upload an image using this code.
Getting this error
Fatal error: Uncaught Error: Call to undefined method MongoDB\Database::getGridFS() in C:\xampp\htdocs\phpmongodb\new.php:4 Stack trace: #0 {main} thrown in C:\xampp\htdocs\phpmongodb\new.php on line 4