从零开始学YII2框架（一）通过Composer安装Yii2框架，yii2composer
从零开始学YII2框架（一）通过Composer安装Yii2框架，yii2composer
最近在学习PHP，着手找一个能快速上手的框架来学习。一开始看兄弟连视频时候讲师推荐ThinkPHP。于是我选择了ThinkPHP来尝试，这个框架的上手难度系数不大，能快速开发一款应用。适合小型的企业应用。因为是国人开发的，中文支持比较好。有比较全面的文档，官网社区也比较活跃。因为我接触的项目都是用Oracle数据库的，所以我想找一款对Oracle支持比较好的PHP框架，但是ThinkPHP框架对Oracle的支持实在是不好。所以我换了Yii框架来试试对Oracle的支持程度。
Yii框架现在稳定版本是1.1.14。目前2.0是测试版。花了几天时间学习了下Yii1来创建应用。有关Yii的文档不是很多。大多都是原版英文的。但是对Oracle的支持还可以。使用的是AR技术。最近看了下Yii2的文档。它加入了PHP的命名空间概念、加入了Bootstrap、smarty等很多好用的功能。比Yii1进步很大，最后我决定学习Yii2框架。基于对Yii1的了解，Yii2应该更加出色。
今天终于搞明白怎么安装Yii2了。对于我这种小白来说真是费尽周折。下面来介绍下如何安装Composer和如何使用Composer安装Yii2。
Composer是PHP中用来管理依赖（dependency）关系的工具。你可以在自己的项目中声明所依赖的外部工具库（libraries），Composer会帮你安装这些依赖的库文件。
Windows安装Composer：
一、下载Composer
官网下载：https://getcomposer.org/download/
二、开启PHP的openssl支持
修改D:\WAMP\bin\php\php5.4.12配置文件php.ini
去掉注释；
三、安装Composer
一路"next"安装完毕。
安装完毕会提示你重新打开CMD命令行使用。
安装Yii2 - advanced 模板
一、下载yii2 - advanced 模板
官网下载：http://www.yiiframework.com/download/
下载完毕解压至
D:\WAMP\www
二、通过composer安装
打开CMD，跳转到目录
D:\WAMP\www\advanced
我们来生成一个名为“yii2test”的app。
输入命令：
composer create-project --prefer-dist --stability=dev yiisoft/yii2-app-advanced ../yii2test
等待… …出现如下界面，表示安装成功。
三、初始化项目
执行CMD命令init
测试安装结果
地址栏输入：http://localhost/yii2test/frontend/web/index.php
会看到如下界面：
至此安装Yii2完毕，后续我会跟进关于PHP框架Yii2的学习进度。
你php没有开启mongodb扩展～～～～和Composer没关系吧
打开你的php.ini 开启mongodb extension （把前面的“；”号去掉）
重启你的服务器（apache、iis...）
然后重试一下
如果是linux系统的，我也不清楚，你搜索下吧
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
AI Hentai Generator
Generate AI Hentai for free.
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
Composer's advanced features: aliases, scripts, and conflict resolution
Jun 03, 2024 pm 12:37 PM
Composer provides advanced features, including: 1. Aliases: define convenient names for packages for repeated reference; 2. Scripts: execute custom commands when installing/updating packages, used to create database tables or compile resources; 3. Conflict resolution: use priorities Rules, satisfaction constraints, and package aliases resolve the different requirements of multiple packages for the same dependency version to avoid installation conflicts.
Agile development and operation of PHP microservice containerization
May 08, 2024 pm 02:21 PM
Answer: PHP microservices are deployed with HelmCharts for agile development and containerized with DockerContainer for isolation and scalability. Detailed description: Use HelmCharts to automatically deploy PHP microservices to achieve agile development. Docker images allow for rapid iteration and version control of microservices. The DockerContainer standard isolates microservices, and Kubernetes manages the availability and scalability of the containers. Use Prometheus and Grafana to monitor microservice performance and health, and create alarms and automatic repair mechanisms.
What are the common ways to convert arrays to objects in PHP?
Apr 28, 2024 pm 10:54 PM
How to convert PHP array to object: use stdClass class, use json_decode() function, use third-party library (such as ArrayObject class, Hydrator library)
PHP code version control and collaboration
May 07, 2024 am 08:54 AM
PHP code version control: There are two version control systems (VCS) commonly used in PHP development: Git: distributed VCS, where developers store copies of the code base locally to facilitate collaboration and offline work. Subversion: Centralized VCS, a unique copy of the code base is stored on a central server, providing more control. VCS helps teams track changes, collaborate and roll back to earlier versions.
The role of PHP CI/CD in DevOps projects
May 08, 2024 pm 09:09 PM
PHPCI/CD is a key practice in DevOps projects that automates the build, test, and deployment processes to improve development efficiency and software quality. A typical PHPCI/CD pipeline consists of the following stages: 1) Continuous Integration: Whenever the code changes, the code is automatically built and tested. 2) Continuous deployment: Speed up delivery by automatically deploying tested and integrated code to the production environment. By implementing the PHPCI/CD pipeline, you can increase development efficiency, improve software quality, shorten time to market, and improve reliability.
How to use Redis cache in PHP array pagination?
May 01, 2024 am 10:48 AM
Using Redis cache can greatly optimize the performance of PHP array paging. This can be achieved through the following steps: Install the Redis client. Connect to the Redis server. Create cache data and store each page of data into a Redis hash with the key "page:{page_number}". Get data from cache and avoid expensive operations on large arrays.
How to use PHP CI/CD to iterate quickly?
May 08, 2024 pm 10:15 PM
Answer: Use PHPCI/CD to achieve rapid iteration, including setting up CI/CD pipelines, automated testing and deployment processes. Set up a CI/CD pipeline: Select a CI/CD tool, configure the code repository, and define the build pipeline. Automated testing: Write unit and integration tests and use testing frameworks to simplify testing. Practical case: Using TravisCI: install TravisCI, define the pipeline, enable the pipeline, and view the results. Implement continuous delivery: select deployment tools, define deployment pipelines, and automate deployment. Benefits: Improve development efficiency, reduce errors, and shorten delivery time.
Visualization technology of PHP data structure
May 07, 2024 pm 06:06 PM
There are three main technologies for visualizing data structures in PHP: Graphviz: an open source tool that can create graphical representations such as charts, directed acyclic graphs, and decision trees. D3.js: JavaScript library for creating interactive, data-driven visualizations, generating HTML and data from PHP, and then visualizing it on the client side using D3.js. ASCIIFlow: A library for creating textual representation of data flow diagrams, suitable for visualization of processes and algorithms.
