Getting Started with Okteto and PHP

Okteto is a platform that simplifies the process of launching cloud development environments without requiring the expertise to do this yourself. This enables developers to automatically spin up fully-managed development environments that emulate production as closely as possible. Okteto eliminates the friction of local development environments, the many deviations that can exist for the same engineering organization, and the troubleshooting that comes with them.

This tutorial will show you how to develop and debug a PHP application using Okteto.

Prerequisites

Install the latest version of the Okteto CLI and configure it to access Okteto. Follow our installation guide if you haven't done it yet.

Step 1: Deploy the PHP Sample App

Get a local version of the PHP Sample App by executing the following commands:

$ git clone https://github.com/okteto/php-getting-started
$ cd php-getting-started

At the root of the directory, you'll find the okteto.yml file. This file describes how to deploy the Php Sample App.

deploy:
  - kubectl apply -f k8s.yml

Deploy your development environment by executing:

$ okteto deploy

 i  Using cindy @ okteto.example.com as context
 i  Running kubectl apply -f k8s.yml
deployment.apps/hello-world created
service/hello-world created
ingress.networking.k8s.io/hello-world created
 ✓  Development environment 'php-getting-started' successfully deployed
 i  Run 'okteto up' to activate your development container

Open your browser and go to the URL of the application. You can get the URL by logging into your Okteto instance (eg. https://okteto.example.com) and clicking on the application's endpoint:

Did you notice that you're accessing your application through an HTTPS endpoint? This is because Okteto will automatically create them for you when you deploy your application. Cool no 😎?

Step 2: Activate your development container

The dev section defines how to activate a development container for the Php Sample App:

dev:
  hello-world:
    image: okteto/php-getting-started:dev
    command: bash
    sync:
      - .:/app
    reverse:
      - 9000:9000
    volumes:
      - /root/.composer/cache

The hello-world key matches the name of the hello world Deployment. The meaning of the rest of fields is:

• image: the image used by the development container (built from this Dockerfile).
• command: the start command of the development container.
• sync: the folders that will be synchronized between your local machine and the development container.
• reverse: a list of ports to reverse forward from your development container to your local machine
• volumes: a list of paths in your development container to be mounted as persistent volumes. For example, this is useful to persist the Composer cache.

Also, note that there is a .stignore file to indicate which files shouldn't be synchronized to your development container. This is useful to avoid synchronizing binaries, build artifacts, or git metadata.

Next, execute the following command to activate your development container:

$ okteto up

 ✓  Persistent volume successfully attached
 ✓  Images successfully pulled
 ✓  Files synchronized
    Namespace: cindy
    Name:      hello-world
    Reverse:   9000 <- 9000

Welcome to your development container. Happy coding!
cindy:hello-world app>

Working in your development container is the same as working on your local machine. Start the application by running the following command:

cindy:hello-world app> php -S 0.0.0.0:8080

[Tue Jul  5 21:04:55 2022] PHP 8.2.0 Development Server (http://0.0.0.0:8080) started

Go back to the browser, and reload the page to test that your application is running.

Step 3: Remote Development with Okteto

Open the index.php file in your favorite local IDE and modify the response message on line 2 to be Hello world from the cluster!. Save your changes.

<?php
$message = "Hello World from the cluster!";
echo($message);

Go back to the browser and reload the page. Your code changes were instantly applied. No commit, build or push required 😎!

Step 4: Remote debugging with Okteto

Okteto enables you to debug your applications directly from your favorite IDE. Let's take a look at how that works with PHPStorm, one of the most popular IDEs for PHP development.

If you haven't already, fire up PHP Storm and load this project there. Once the project is loaded, open index.php and set a breakpoint in line 2. Click on the Start Listen PHP Debug Connections button on the PhpStorm toolbar.

Go back to your browser and reload the page. The execution will automatically halt at the breakpoint.

note

If this is the first time you debug this application, the IDE will ask you to confirm the source mapping configuration. Verify the values and click ok to continue.

At this point, you're able to inspect the request object, the current values of everything, the contents of $_SERVER variable, etc.

Your code is executing in Okteto, but you can debug it from your local machine without any extra services or tools. Pretty cool no? 😉

Next steps

Congratulations, you just developed your first application in Okteto 🚀.

Okteto lets you develop your applications directly on Kubernetes. This way you can:

• Eliminate integration issues by developing in a realistic environment
• Test your application end to end as fast as you type code
• No more CPU cycles wasted in your machine. Develop at the speed of the cloud!

Find more advanced samples with Okteto in this repository or join our community to ask questions and share your feedback.