Tutorial: Use Deployer to implement cross-server PHP project deployment

Tutorial: Use Deployer to implement cross-server PHP project deployment

Introduction:
In actual project development, sometimes it is necessary to deploy the same PHP project on multiple servers. In order to improve development efficiency and ensure deployment consistency, we can use the Deployer tool to automatically implement cross-server PHP project deployment. Deployer is a deployment tool for PHP applications. Through simple configuration and commands, we can easily deploy projects to different environments. This article will introduce how to use Deployer to implement cross-server PHP project deployment and provide corresponding code examples.

1. Installing Deployer
   First, we need to install Deployer in the local development environment. We can install Deployer through Composer. You can use the following command in the terminal to install:

   composer require deployer/deployer

2. Create Deployer configuration file
   Create a file named deploy.php in the project root directory file, used to configure Deployer related parameters. In this file, we need to set the server information to be connected, the directory structure of the project, etc. The following is an example deploy.php configuration file:

   namespace Deployer;
   
   require 'recipe/common.php';
   
   // 设置服务器信息
   server('production', 'example.com', 22)
    ->user('username')                 // 远程服务器的用户名
    ->identityFile('~/.ssh/id_rsa')     // SSH私钥文件路径
    ->set('deploy_path', '/var/www/html');  // 项目部署路径
   
   // 项目目录结构
   set('repository', '/path/to/repository');
   set('shared_files', []);
   set('shared_dirs', []);
   
   // 任务
   task('deploy', [
   
    // 更新代码到服务器
    'deploy:update_code',
   
    // 安装项目依赖
    'deploy:vendors',
   
    // 清理旧版本
    'deploy:cleanup',
   ]);
   
   // 配置需要执行的服务器
   after('deploy', 'success');

In the above example, we defined a server named production through the server function and set the server's connection information. We also need to define the directory structure of the project, and use the set function to set the code warehouse path (repository), shared files (shared_files), shared directories (shared_dirs), etc. Finally, we define a task named deploy and set the operations that need to be performed during the deployment process.

3. Writing a deployment script
   In the deploy.php file, we can write a customized deployment script to perform some specific operations during the deployment process. For example, we can perform some testing before deploying, or perform some cleanup operations after the deployment is completed. The following is an example custom deployment script:

   namespace Deployer;
   
   // 在部署之前执行的操作
   before('deploy', 'test');
   function test()
   {
    writeln('Running tests');
    // 执行一些测试操作
   }
   
   // 在部署完成后执行的操作
   after('deploy', 'cleanup');
   function cleanup()
   {
    writeln('Cleaning up old files');
    // 执行一些清理操作
   }

In the above example, we define the operations before and after the deploy task through the before and after functions, and in these two functions The test and cleanup functions are written separately to perform corresponding operations.

4. Execute deployment command
   After completing the above configuration, we can use Deployer in the terminal to execute the deployment command. The following are some common command examples supported by Deployer:

5. Deploy code:

   dep deploy

• Deploy the specified server:

  dep deploy production

• Display available task list:

  dep list

• Execute customized deployment script:

  dep your_custom_task

Please follow Select the appropriate command for deployment based on actual project requirements.

Conclusion:
Through the above steps, we can easily use Deployer to implement cross-server PHP project deployment. Using Deployer can save you the trouble of manual deployment and ensure the consistency of project deployment. I hope this article can be helpful to everyone in actual PHP project development.

Reference materials:

• Deployer official documentation: http://deployer.org/
• Deployer project Github address: https://github.com/deployphp /deployer

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