Public Library-mongodb-Notes

1, http://cn2.php.net/manual/en/class.mongogridfs.php

classFilecontrollerextendssycontroller{/** @author YJ * @description to use the following two functions, you must first initialize * date:14-9-3*/     Public functioninit () {Header("Content-type:text/html;charset=utf-8"); //Connect MONGO and Initialize GFS//database naming file        $conn=New\mongoclient (); $db=$conn-picdb; //Get Gridfs Object        $prefix= ' pic '; $collection=$db->getgridfs ($prefix); return $collection; }    /** @author YJ * @description will pass all binaries on to MongoDB and return the file index ID value * Dedicated to form submission resources * DATE:14-9-2 * time:11:21 */     Public functionUpload$filename,$collection)    {        $id=$collection->storeupload ($filename);//gets the _id string in the ID object of the previous step        $id=Strval($id); return $id;    }    /** @author YJ * @description Delete the corresponding resource based on the ID value * date:14-9-3*/     Public functionDelete$id,$collection)    {//Convert ID string to ID object        $collection->delete (New\mongoid ($id)); }    /** * @author: YJ * Use resource ID and resource type to retrieve and display resources from MongoDB*/     Public functionget () {Header("Content-type:text/html;charset=utf-8"); $conn=New\mongoclient (); $db=$conn-picdb;//Get Gridfs Object        $prefix= ' pic '; $collection=$db->getgridfs ($prefix); //get ID and type        $id= I (' get.id '); $type= I (' Get.type '); //Return Data        $object=$collection->findone (Array(' _id ' =New\mongoid ($id))); Header(' Content-type: '.$type); Echo $object-getBytes (); }

Note that the ' _id ' stored in MongoDB is an object ID, also known as an objects ID. And the id we put into MySQL is a string ID. The conversion method is as follows:

$id Strval ($id);  // gets the string ID in the object ID

new \mongoid ($id)  // convert string ID to MONGO object ID

2. If you want to use MongoDB in other controllers

//initializing the MongoDB database$collection= R (' File/init ');//use a form to upload a file, $key is the name of the input label in the form$id= R (' File/upload ',Array($key,$collection));//according to the string ID $avatar _id to delete MONGO inside the corresponding. files. chunks file$collection->delete (New\mongoid ($avatar _id));//gets the resource directly from the MONGO based on the string ID and displays it according to the type$avatar _id} "/>

Public Library-mongodb-notes