Open source contribution in PHP: how to start contributing and not give up

Why open source is your career accelerator in PHP

Imagine: you've been writing PHP code for a year or two. You know what PSR-4 is, you can work with Composer, and you've even written a couple of tests in PHPUnit. But your portfolio consists of study projects and a couple of task trackers. Sound familiar?

Now imagine a different picture: on GitHub, your profile boasts a green streak of commits, and below it — a list of projects that are used by thousands of developers worldwide. Your code is reviewed by maintainers of Laravel, Symfony, or PHPUnit. You get reviews from people whose names every PHP developer knows. That's what open source contribution looks like.

This article is not just a motivational speech. It's a practical guide that will take you from finding your first task to successfully merging your code. We'll break down real PHP examples, talk about common mistakes, and give you a checklist for your first PR.

Myths that prevent you from starting to contribute

Before we get to the code, let's dispel three main fears:

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• "I'm not good enough." Open source doesn't require a senior level. Projects need people who fix typos in documentation, write tests, and fix minor bugs. 80% of contributors are beginners.
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• "My code will be rejected." Even if it is rejected — it's experience. You'll get a review and learn how to write better. Maintainers are not monsters, they are developers just like you.
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• "It will take too much time." Your first PR can be done in an evening. You don't need to rewrite the framework core right away.
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Step 1: Prepare your toolkit

For a comfortable start, you'll need:

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• Git and GitHub (or GitLab) — basic skills with branches and PRs.
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• Local environment: PHP 8.x, Composer, Docker (optional, but convenient).
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• PHPUnit — most projects require tests.
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• PHP CS Fixer or PHP_CodeSniffer — code style must conform to PSR-12.
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Install PHP CS Fixer globally via Composer:

composer global require friendsofphp/php-cs-fixer

Now you are ready not just to read code, but to improve it.

Step 2: Where to find tasks for open source contribution in PHP

The most common question: "Which project to choose?" Don't try to conquer Laravel or Symfony right away. Start small.

Proven platforms

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• GitHub Labels: add label:good-first-issue + language:php in the search. These are special labels for beginners.
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• Up-for-grabs.net: an aggregator of tasks for contributors. Filter by PHP.
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• CodeTriage: a service that sends tasks to your email from projects you've selected.
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• Your own dependencies: open your project's composer.json. Look at the libraries you use. Find bugs or outdated documentation there.
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What to look for first?

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• Typos and errors in README, PHPDoc.
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• Missing tests (code coverage is often lacking).
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• Deprecated function calls (e.g., mysql_* in old projects).
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• Minor bugs marked as low-hanging-fruit.
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Example: you find a test in the PHPUnit repository that doesn't cover an edge case. This is an ideal candidate for your first PR.

Step 3: First contribution — analysis on real code

Let's say you chose a small project — the date handling library Carbon (or its fork). You noticed that the isWeekend() method doesn't account for regional holidays. Task: add an optional parameter for locale.

Here's what your path will look like.

3.1 Fork and clone

git clone https://github.com/YOUR_USERNAME/carbon.git\ncd carbon\ncomp