Building Your First PHP Application with Docker
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Building Your First PHP Application with Docker

A step-by-step guide for PHP developers learning Docker

About the Book

Docker has quickly become the container engine of choice, and it may be replacing a virtual machine near you soon. This book offers a step-by-step guide to walk you through building your first real PHP web application using Docker while explaining the basics of the platform along the way.

The application we build in this eBook will do many of the key things web developers need to do on a daily basis, including:

  • Installing dependencies using Composer.
  • Getting data from a third-party API.
  • Saving data to a MySQL database.
  • Using a web framework (SlimPHP) for routing.
  • Storing environmental variables securely.
  • And much more.

Read more tutorials and Docker + PHP tips at

About the Author

Karl Hughes
Karl Hughes

Karl Hughes has been building web applications for education technology companies since 2011. He went to the University of Tennessee and graduated with a major in Mechanical Engineering, a minor in Business Administration, and a passion for writing both prose and software.

In addition to blogging at and he has contributed to Codeship’s Blog, php[architect] magazine, and regularly speaks at meetups and conferences. He currently lives in Chicago and works as the Chief Technology Officer at The Graide Network.

Table of Contents

Chapter 1. Introduction to Docker

What is Docker?

Why Docker?

What can I expect from this book?

Chapter 2. Running a PHP Script in Docker

Introduction to Docker Images

Getting a PHP Docker Image

Getting Code Into a Container

Running our Hello World script in Docker

Chapter 3. Creating a SlimPHP Application

Installing Slim Framework

Stubbing Out Endpoints

Running Our Application for the First Time

More Docker Run Options

Connecting to the MetaWeather API

Chapter 4. Connecting to the Database

Creating a Custom Dockerfile

Building the Image

Running a MySQL Container

Logging into a Running Container

Retaining Data in Our Database Container

Creating a Database Table

Saving to the Database from our PHP Application

Linking the PHP Container

Deleting Data

Managing Environmental Variables

Chapter 5. Next Steps

Further Development


Final Words

Quick Reference

About the Author

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