Php implements the Mongodb custom method to generate the auto-increment ID

Source: Internet
Author: User
Tags mongo shell

Php implements the Mongodb custom method to generate the auto-increment ID

This article describes how to generate a user-defined Mongodb ID using php. The example analyzes the implementation skills of Mongodb auto-increment fields and the corresponding php operation methods. For more information, see

 

 

This example describes how to generate a user-defined ID for Mongodb in php. Share it with you for your reference. The specific analysis is as follows:

The Code is as follows:

// First create an auto-increment id set ids
> Db. ids. save ({name: "user", id: 0 });
// Check whether the operation is successful.
> Db. ids. find ();
{"_ Id": ObjectId ("4c637dbd900f00000000686c"), "name": "user", "id": 0}
// Then, the ids are automatically added to the ids set each time a new user is added.
> Userid = db. ids. findAndModify ({update: {$ inc: {'id': 1 }}, query: {"name": "user"}, new: true });
{"_ Id": ObjectId ("4c637dbd900f00000000686c"), "name": "user", "id": 1}
// Note: Because findAndModify is a method that completes the update and search operations, it is atomic and does not conflict with multithreading.
// Save the corresponding data
> Db. user. save ({uid: userid. id, username: "kekeles", password: "kekeles", info: "http://www.jb51.net /"});
// View the result
> Db. user. find ();
{"_ Id": ObjectId ("4c637f79900f00000000686d"), "uid": 1, "username": "admin", "password": "admin "}
// This is the mongo shell. If you use the server-side java php python program, you can encapsulate these operations by yourself. Only a few parameters are required to return the auto-increment id, you can also implement auto-increment IDs across tables like Oracle.

 

I wrote a php article and shared it with you.

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<? Php

Function mid ($ name, $ db ){

$ Update = array ('$ inc' => array ("id" => 1 ));

$ Query = array ('name' => $ name );

$ Command = array (

'Findandmodify' => 'kids', 'update' => $ update,

'Query' => $ query, 'new' => true, 'upsert '=> true

);

$ Id = $ db-> command ($ command );

Return $ id ['value'] ['id'];

}

$ Conn = new Mongo ();

$ Db = $ conn-> idtest;

$ Id = mid ('user', $ db );

$ Db-> user-> save (array (

'Uid' => $ id,

'Username' => 'kekeles ',

'Password' => 'kekeles ',

'Info' => 'HTTP: // www.jb51.net /'

));

$ Conn-> close ();

?>

I hope this article will help you with php programming.

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