Symfony2 allocates uploaded file to memory

php, symfony, symfony-forms

Solution

I assume that you're trying symfony via the app_dev.php front controller.

By default, in the dev environment, the profiler is enabled for every requests.

framework:
    profiler: { only_exceptions: false }

Just change the only_exceptions param from false to true, and try again.

framework: profiler: { only_exceptions: true }

You should use the tools that the framework provides you to handle file upload.

Action:

public function createAction(Request $request)
{
    $form = $this->createFormBuilder()
        ->add('attachment', 'file')
        ->getForm();

    if ($request->getMethod() == 'POST') {
        $form->bindRequest($request);

        if ($form->isValid()) {
            $file = $form['attachment']->getData(); /** @var $file \Symfony\Component\HttpFoundation\File\UploadedFile */

            echo $file->getClientSize();
        }
    }

    return $this->render('AcmeDemoBundle:Demo:create.html.twig', array(
        'form' => $form->createView(),
    ));
}

Template:

{% extends "AcmeDemoBundle::layout.html.twig" %}

{% block content %}

<h1>Upload File</h1>

<form action="" method="post" {{ form_enctype(form) }}>
    {{ form_errors(form) }}

    {{ form_row(form.attachment) }}

    {{ form_rest(form) }}

    <input type="submit" />
</form>

{% endblock %}

With this code, php never exceeds memory usage. If the file is too big, the form show an error, and the code inside "if ($form->isValid())" is not executed.

Have a look at the form documentation : http://symfony.com/doc/current/book/forms.html and the reference for the "file" field type : http://symfony.com/doc/current/reference/forms/types/file.html

Problem

While uploading a file bigger than post_max_size in Symfony, the uploaded file is allocated in the memory. Fatal error: Allowed memory size of 150994944 bytes exhausted (tried to allocate 84627994 bytes) in /Applications/MAMP/htdocs/Symfony/vendor/symfony/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php on line 28 Why is symfony trying to allocate a file to the memory on POST? 1/ php.ini ``` file_uploads = On upload_tmp_dir = /Applications/MAMP/tmp/php upload_max_filesize = 32M post_max_size = 48M ``` 2/ THE CONTROLLER ``` <?php //AcmeDemoBundle/Controller/DemoController namespace Acme\DemoBundle\Controller; use Symfony\Component\HttpFoundation\Request; class DemoController extends Controller { public function createAction(Request $request) { if ($request->getMethod() == 'POST') { if ($_FILES["file"]["size"] < 3000000 )//3Mb { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . "<br />"; } else { if (empty($_POST) && empty($_FILES) && isset($_SERVER['REQUEST_METHOD']) && strtolower($_SERVER['REQUEST_METHOD']) == 'post') { echo "The file is bigger than post_max_size in php.ini."; } else { echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />"; if (file_exists("upload/" . $_FILES["file"]["name"])) { echo $_FILES["file"]["name"] . " already exists. "; } else { move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $_FILES["file"]["name"]); echo "Stored in: " . "upload/" . $_FILES["file"]["name"]; } } } } else { echo "Invalid file"; } } return $this->container->get('templating')->renderResponse('AcmeDemoBundle:Demo:create.html.twig'); } ``` 3/ THE TEMPLATE ``` //AcmeDemoBundle/Resources/views/Demo/create.html.twig {% extends "AcmeDemoBundle::layout.html.twig" %} {% block content %} <h1>Upload File</h1> <form action="#" method="post" enctype="multipart/form-data"> <label name="file">Filename:</label> <input type="file" name="file" id="file" /> <br /> <input type="submit" name="submit" value="Submit" /> </form> {% endblock %} ```

Original source