PHP continuous integration and DevOps practice

Continuous Integration (CI) for PHP improves development efficiency and quality by automating builds, tests, and deployments using CI tools like Travis CI. This tutorial walks you through the steps of using Travis CI: installing CI tools, configuring build scripts, automating code testing, and deploying your code. Additionally, practical examples of deploying a WooCommerce e-commerce website using Capistrano are provided.

PHP Continuous Integration and DevOps Practice

Continuous Integration (CI) is a key step in the DevOps process, which uses automation Software build, test and deployment processes to improve software development efficiency and quality. This article will introduce how to use PHP to implement CI and provide practical cases to illustrate its application.

Install CI tools

PHP can use [Travis CI](https://travis-ci.org/) or [CircleCI](https://circleci .com/) and other CI tools. For this tutorial, we will use Travis CI.

Installing Travis CI requires creating the .travis.yml file in the project root directory. This file contains CI build configuration.

language: php
php:
  - 7.3
  - 7.4
  - 8.0
script:
  - composer install
  - vendor/bin/phpunit

Automated Build

A CI build includes all the steps of pulling code from a version control system, running unit tests, and building and deploying the product. With Travis CI, the build step is configured by the script section.

Code Testing

Unit testing is a crucial step in the CI build process and helps detect errors in your code. PHP can use [PHPUnit](https://phpunit.readthedocs.io/) for unit testing.

class ExampleTest extends PHPUnit\Framework\TestCase
{
    public function testExample()
    {
        $this->assertEquals(1, 1);
    }
}

Deploy code

After you complete building and testing, CI tools can automate the deployment process. For PHP, you can use tools such as [Capistrano](https://capistranorb.com/) or [DeployHQ](https://www.deployhq.com/).

# 部署脚本
set :application, 'my_app'
set :deploy_to, '/var/www/my_app'

task :deploy do
  on roles(:app) do
    execute "cd #{deploy_to}/current && composer install"
    execute "cd #{deploy_to}/current && php artisan migrate"
    execute "cd #{deploy_to}/current && php artisan cache:clear"
    execute "cd #{deploy_to}/current && php artisan serve"
  end
end

Practical Case

Let us look at a practical case illustrating the application of CI in PHP projects.

Suppose we have a WooCommerce e-commerce website and need to automate building, testing, and deploying code changes. To do this, we can perform the following steps:

1. Set up the Travis CI configuration file (.travis.yml)
2. Write unit tests to test the website functionality
3. Install DeployHQ and configure the deployment process
4. Push code changes to the version control system
5. Monitor Travis CI builds to ensure they run successfully

Through implementation With CI and DevOps practices, we can significantly improve the delivery speed and reliability of PHP projects.

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