Detailed explanation of how PHP MongoDB GridFS stores files

<?php
//初始化gridfs
$conn = new Mongo(); //连接MongoDB
$db = $conn->photos; //选择数据库
$grid = $db->getGridFS(); //取得gridfs对象

gridfs has three ways to store files

The first one stores files directly

$id = $grid->storeFile("./logo.png");

The second one stores file binary stream

$data = http://www.bkjia.com/PHPjc/get_file_contents("./logo.png");
$id = $grid->storeBytes($data,array("parame"=> 'Additional parameters will be stored together with the picture'));

The third way to save files submitted directly through the form $_FILES

$id = $grid->storeUpload('upfile');//相当于
$id = $grid->storeFile($_FILES[‘upfile'][‘tmp_name']);
//--------------以上是保存图片--下面开始读取图片----------------//
保存成功后返回$id = md5字符串$logo = $grid->findOne(array('_id'=>$id));
 //以_id为索引取得文件
header('Content-type: image/png');
//输出图片头
echo $logo ->getBytes();
//输出数据流?>

Thanks for reading, I hope it can help everyone, thank you for your support of this site !

For more detailed explanations of PHP MongoDB GridFS file storage methods and related articles, please pay attention to the PHP Chinese website!