Backend Development
PHP Tutorial
Relevant explanation of mongoDB singleton mode operation class implemented by PHP
Relevant explanation of mongoDB singleton mode operation class implemented by PHP
This article mainly introduces the mongoDB singleton mode operation class implemented by PHP, and analyzes the related implementation skills of the database encapsulation class of PHP based on the singleton mode to operate the MongoDB database in the form of examples. Friends in need can refer to it
The example of this article describes the mongoDB singleton mode operation class implemented by PHP. I share it with you for your reference. The details are as follows:
I have seen many mongo classes and they are all unsatisfactory. Finally, I found that there was no need to encapsulate the class myself. The methods that come with the php mongo extension are already very convenient
, but it is customary to encapsulate the database connection part. Finally, I encapsulated a singleton mode database class
The singleton mode is used to avoid generating multiple instances and wasting resources
The following is the encapsulated code
class Mongo_db
{
private static $cli;
/**
* 不允许初始化
*/
private function __construct()
{
$config = Config::get('config.mongo_config');
if(empty($config)){
$this->throwError('无法连接数据库！');
}
if (!empty($config["user_name"])) {
$this->mongo = new MongoClient("mongodb://{$config['user_name']}:{$config['password']}@{$config['host']}:{$config['port']}");
}else {
$this->mongo = new MongoClient($config['host'] . ':' . $config['port']);
}
}
/**
* 单例模式
* @return Mongo|null
*/
public static function cli(){
if(!(self::$cli instanceof self)){
self::$cli = new self();
}
return self::$cli->mongo;
}
}
$mongo = Mongo_db::cli()->test->mycollection; // test 是选择的数据库 ， mycollection 是选择的表。 因为使用单例模式，所以，只会实例一个资源具体操作再参考下面的文章吧Here is an article about the operation of php on mongo, which is very detailed and easy to understand. I hope you can refer to
//www.jb51.net/article/37727.htm
Articles you may be interested in:
tp5( thinkPHP5) Detailed explanation of the method of operating the mongoDB database
Explanation of the solution to PHP Class SoapClient not found
PHP Class SoapClient Solution to not found
The above is the detailed content of Relevant explanation of mongoDB singleton mode operation class implemented by PHP. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1666
14
1425
52
1325
25
1273
29
1252
24
PHP and Python: Code Examples and Comparison
Apr 15, 2025 am 12:07 AM
PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.
PHP and Python: Different Paradigms Explained
Apr 18, 2025 am 12:26 AM
PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.
PHP: Handling Databases and Server-Side Logic
Apr 15, 2025 am 12:15 AM
PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.
PHP's Purpose: Building Dynamic Websites
Apr 15, 2025 am 12:18 AM
PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.
Choosing Between PHP and Python: A Guide
Apr 18, 2025 am 12:24 AM
PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.
Use Composer to solve the dilemma of recommendation systems: andres-montanez/recommendations-bundle
Apr 18, 2025 am 11:48 AM
When developing an e-commerce website, I encountered a difficult problem: how to provide users with personalized product recommendations. Initially, I tried some simple recommendation algorithms, but the results were not ideal, and user satisfaction was also affected. In order to improve the accuracy and efficiency of the recommendation system, I decided to adopt a more professional solution. Finally, I installed andres-montanez/recommendations-bundle through Composer, which not only solved my problem, but also greatly improved the performance of the recommendation system. You can learn composer through the following address:
PHP and Python: A Deep Dive into Their History
Apr 18, 2025 am 12:25 AM
PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.
Why Use PHP? Advantages and Benefits Explained
Apr 16, 2025 am 12:16 AM
The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.
