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=======================
PHP library for handling chunk uploads. Library contains helper methods for:
* Testing if uploaded file chunk exists.
* Validating file chunk
* Creating separate chunks folder
* Validating uploaded chunks
* Merging all chunks to a single file
This library is compatible with HTML5 file upload library: https://github.com/flowjs/flow.js
How to get started?
--------------
Setup Composer: https://getcomposer.org/doc/00-intro.md
Run this command in your project:
```
composer require flowjs/flow-php-server
```
This will create a vendor directory for you, which contains an autoload.php file.
Create a new php file named `upload.php`:
```php
//Path to autoload.php from current location
require_once './vendor/autoload.php';
$config = new \Flow\Config();
$config->setTempDir('./chunks_temp_folder');
$request = new \Flow\Request();
if (\Flow\Basic::save('./' . $request->getIdentifier(), $config, $request)) {
// file saved successfully and can be accessed at './final_file_destination'
} else {
// This is not a final chunk or request is invalid, continue to upload.
}
```
Make sure that `./chunks_temp_folder` path exists and is writable. All chunks will be saved in this folder.
If you are stuck with this example, please read this issue: [How to use the flow-php-server](https://github.com/flowjs/flow-php-server/issues/3#issuecomment-46979467)
Advanced Usage
--------------
```php
$config = new \Flow\Config();
$config->setTempDir('./chunks_temp_folder');
$file = new \Flow\File($config);
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
if ($file->checkChunk()) {
header("HTTP/1.1 200 Ok");
} else {
header("HTTP/1.1 204 No Content");
return ;
}
} else {
if ($file->validateChunk()) {
$file->saveChunk();
} else {
// error, invalid chunk upload request, retry
header("HTTP/1.1 400 Bad Request");
return ;
}
}
if ($file->validateFile() && $file->save('./final_file_name')) {
// File upload was completed
} else {
// This is not a final chunk, continue to upload
}
```
Delete unfinished files
-----------------------
For this you should setup cron, which would check each chunk upload time.
If chunk is uploaded long time ago, then chunk should be deleted.
Helper method for checking this:
```php
\Flow\Uploader::pruneChunks('./chunks_folder');
```
Cron task can be avoided by using random function execution.
```php
if (1 == mt_rand(1, 100)) {
\Flow\Uploader::pruneChunks('./chunks_folder');
}
```
Contribution
------------
Your participation in development is very welcome!
To ensure consistency throughout the source code, keep these rules in mind as you are working:
* All features or bug fixes must be tested by one or more specs.
* Your code should follow [PSR-2](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md) coding style guide
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