Basic Doctrine2 GridFS example

gistfile1.php

/** @Document */
Class Image
{
    /** @Id */
    private $id;
    
    /** @Field */
    private $name;
    
    /** @File */
    private $file;
//....

// store file
$image = new Image();
$image->setName('Test image');
$image->setFile('/path/to/image.png');

$dm->persist($image);
$dm->flush();

// retrieve and return file to client
$image = $dm->createQueryBuilder('Documents\Image')
    ->field('name')->equals('Test image')
    ->getQuery()
    ->getSingleResult();

header('Content-type: image/png;');
echo $image->getFile()->getBytes();