Detailed explanation of PHP operation of MongoDB GridFS storage files_PHP tutorial

Copy code The code is as follows:

//Initialize gridfs
$conn = new Mongo(); //Connect to MongoDB
$db = $conn->photos; //Select the database
$grid = $db->getGridFS(); //Get the gridfs object

//gridfs has three ways to store files
//The first method is to store files directly
$id = $grid->storeFile("./logo.png");

//The second storage file binary stream
$data = get_file_contents("./logo.png");
$id = $grid->storeBytes($data,array("parame" =>'Additional parameters will be stored with the image'));

//The third way to save files submitted by direct forms $_FILES
$id = $grid->storeUpload('upfile');
//Equivalent to
$id = $grid- >storeFile($_FILES['upfile']['tmp_name']);

//-------------The above is the saved image--below to start reading the image-------------

//Return $id = md5 string after successful saving
$logo = $grid->findOne(array('_id'=>$id)); //Get the file using _id as the index
header('Content-type: image/png'); //Output image header
echo $logo ->getBytes(); //Output data stream
?>

http://www.bkjia.com/PHPjc/327718.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/327718.htmlTechArticleCopy the code as follows: ?php //Initialize gridfs $conn = new Mongo(); //Connect to MongoDB $ db = $conn-photos; //Select database $grid = $db-getGridFS(); //Get gridfs object //gridfs has...