What are some best practices for continuous deployment in PHP projects using tools like Jenkins or GitLab?

Continuous deployment in PHP projects using tools like Jenkins or GitLab can be achieved by setting up automated pipelines that build, test, and deploy the code whenever changes are pushed to the repository. Best practices include writing unit tests for your code, using version control to track changes, and ensuring that your deployment process is reliable and scalable.

<?php
// Example PHP code snippet for setting up a Jenkins pipeline for continuous deployment

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                sh 'composer install'
            }
        }

        stage('Test') {
            steps {
                sh 'vendor/bin/phpunit'
            }
        }

        stage('Deploy') {
            steps {
                sh 'ssh user@server "cd /path/to/project && git pull origin master"'
            }
        }
    }
}