SensioLabs Stories

Dive into the SensioLabs Blog

SensioLabs Stories is a blog that gathers articles from experts, tutorials, and the latest news from SensioLabs, the creator of Symfony. Focused on PHP, Symfony, and development, it's a key resource for following the latest trends.

Black green and golden computer RAM on a dark ground
Clément Bertillon New

Give Your AI Agents Long-Term Memory: The LLM Wiki Pattern Implemented in Symfony

Every developer who uses coding assistants like Claude Code, Codex, or Antigravity on the daily knows this frustration: you spin up a prompt for a project and, once again, you have to explain everything from scratch. The agent has no clue about your Symfony architecture preferences, your PHP standards, how you structure your DTOs, your Doctrine naming conventions, or the technical decisions you nailed down on another repo last week. You end up spending more time writing preambles in your prompts than actually coding high-value features.

Read more
Fall leaf hanging on a tree branch
Jules Daunay

The SensioLabs Fall 2026 Roadmap: Where to Catch Us This Autumn!

Summer is coming to an end, but PHP and Symfony conference season is just getting started! From international conferences and partner events to regional meetups and accessibility initiatives, the SensioLabs team, creator of Symfony, will be traveling across France and Europe between now and the end of the year 🍂

Read more
Modern editorial illustration of TYPO3 DevDays excitement with abstract purple-accented conference and community elements
Stiven Llupa

This Is Awesome: A TYPO3 DevDays Story

A wrong turn through a forest, a cornfield, and finally a tech conference. At TYPO3 Developer Days, I discovered just how closely the TYPO3 and Symfony communities are connected — through shared technology, familiar challenges, and one important principle: build for your users.

Read more
Abstract editorial illustration of PHP 8.6 JSON parsing with a highlighted error position and subtle purple accents
Oskar Stark

PHP 8.6: JSON Decode Error Position

PHP 8.6 adds a small but useful improvement to JSON decoding: you can now get the exact error position when parsing fails. That makes debugging malformed payloads much faster.

Read more
Large tree under the sunlight
Mathieu Santostefano

Multiply your AI development speed using Git Worktrees

Say goodbye to context switching and the "stash-and-switch" headache. By leveraging Git Worktrees alongside modern AI agents, you can now isolate environments and handle bug fixes in parallel while your AI builds features in the background. It’s a total DX game-changer that turns your Git workflow into a multi-threaded powerhouse.

Read more
A man sculpting a rock with PDF written on it
Steven Renaux

Create a Custom Builder - A GotenbergBundle Story

In a previous article, we explored how to generate your first PDF in a few lines of code using Gotenberg and GotenbergBundle, a Symfony bundle that wraps Gotenberg's HTTP API to convert HTML or Office files into PDFs. That was a great start. But what happens when your application needs to generate multiple different PDFs, each with its own layout, styles, data?

Read more
Nicolas Grekas standing on stage at SymfonyLive Paris 2026
Jules Daunay

SymfonyLive Paris 2026: AI Revolution and a Peak Reunion for Team SensioLabs

The final curtain has fallen on SymfonyLive Paris 2026, and we're still buzzing ✨ (and seeing lines of code). As Symfony's creator and a long-time core sponsor, SensioLabs couldn't have picked a better moment to celebrate open source, innovation, and, most importantly, the amazing community that supports us.

Read more
Illustration of Developer
Silas Joisten

The Developer Experience Revolution 2026

Discover why Developer Experience matters more than ever and how better tools, smarter workflows, and a culture of learning can transform the way teams build software.

Read more
Nicolas Grekas with a mic in his right hand raising his left hand on stage at SymfonyCon Amsterdam 2025
Jules Daunay

Symfony 8: Stability, Security, and Innovation for Developers

To celebrate the launch of Symfony 8, we sat down with Nicolas Grekas, an emblematic figure in open-source and a major contributor to the framework. Between new JSON components, security hardening, and native integration with PHP 8.4, Nicolas explains why version 8 is a natural continuation of previous Symfony versions, without disrupting businesses. Read on for an overview to help you understand what's new and approach your upgrade with confidence.

Read more
Symfony UX training
Elise Hamimi

Boost Your Interfaces: Learn Symfony UX with the New Official Training by SensioLabs

In just a few years, Symfony UX has become a favorite among Symfony users. Perfectly aligned with modern  developers’ priorities, it allows you to easily build interactive, high-performance interfaces without leaving the comfort of the framework. It was time to bring this to our training catalog. That’s why we are proud to officially launch our new Symfony UX training program.

Read more
A yellow and white smiley on the ground with feets in sneakers
Rémi Brière

Giving Meaning to Agility with Evidence-Based Management

Agile frameworks, such as Scrum and Kanban, are well-known for helping teams focus more effectively on creating value and adapting to changes more easily. However, agility doesn't stop at the team level. Some approaches also address decision-makers and organizations. Evidence-Based Management is one such approach, offering a different perspective with its structured value and progress management based on concrete evidence.

Read more
Fabien Potencier
Elise Hamimi

SymfonyCon Amsterdam 2025: Our Recap and the Highlights

After an iconic first edition in 2019, SymfonyCon made its big comeback to Amsterdam. From the start, you could feel the energy of a highly anticipated conference: more than 1,200 attendees, 39 nationalities, the biggest Symfony community reunion of the year, great discoveries... and a fun atmosphere. This year was extra special because it was the 20th anniversary of Symfony. SensioLabs was there: we'll tell you all about our experience there!

Read more
Chart going up
Silas Joisten

Why Tests? Explained for Management

For business leaders: why testing matters for ROI, risk reduction, and agility explained in management language with numbers and real case studies.

Read more
Code happy in lights
Imen Ezzine

Code Review: Types, Organization, and Best Practices

Code review is an essential step in the software development cycle. It improves code quality, reduces bugs, and encourages knowledge sharing within the team. GitLab and GitHub, two of the most popular code management platforms, offer advanced features to facilitate this process. This article covers the various types of code reviews, how to organize them, and how to use templates and checklists to make PRs (pull requests) more efficient.

Read more
The SensioLabs team celebrating the 20th anniversary of Symfony with balloons
Jules Daunay

The Story Continues: SensioLabs Celebrates Symfony's 20th Anniversary

Time flies, especially when you're busy shaping the future of development! The SensioLabs team has just reached a milestone with the anniversary of the Symfony framework. We marked the occasion at the office, but the party isn't over yet. The date is already set for an XXL celebration at SymfonyCon Amsterdam 2025, from November 27 to 28.

Read more
PHP 8.5 URI extension
Oskar Stark

PHP 8.5's New URI Extension: A Game-Changer for URL Parsing

PHP 8.5 introduces a powerful new URI extension that modernizes URL handling. With support for both RFC 3986 and WHATWG standards, the new Uri class provides immutable objects, fluent interfaces, and proper validation - addressing all the limitations of the legacy parse_url() function. This guide shows practical before/after examples and explains when to use each standard.

Read more
Open in new tab
Silas Joisten

The Tab Trap: Why Forcing New Tabs Is Bad UX

We’ve all done it — added target="_blank" to a link to “help users” stay on our site. But what feels like a harmless convenience often creates confusion, breaks accessibility, and introduces hidden security risks.

Read more
3 dog heads
Mathieu Santostefano

Bring Your Own HTTP client

Break free from rigid dependencies in your PHP SDKs. Learn how to use PSR-7, PSR-17, and PSR-18 standards along with php-http/discovery to allow users to bring their favorite HTTP client, whether it's Guzzle, Symfony HttpClient, or another. A must-read for PHP and Symfony developers.

Read more
Vegetables on a wooden board with a knife with a pan on top
Rémi Brière

Why Scrum Fails (and How to Fix It) - Part 2

Scrum is often seen as the obvious framework for structuring and energizing product development, especially digital products. However, its adoption doesn't automatically guarantee success. So, what does Scrum really enable? More importantly, what are the conditions necessary for its effectiveness? And, above all, what pitfalls should be avoided to ensure it becomes a real asset?

Read more
Blue sign on a building with several Now What? letters
Thibaut Chieux

How To Prioritize Messages When Building Asynchronous Applications With Symfony Messenger

Asynchronous processing offers benefits like decoupled processes and faster response times, but managing message priorities can become a challenge. When dealing with tasks ranging from password resets to complex exports, ensuring timely delivery of critical messages is essential. This article explores common asynchronous processing issues and provides solutions using Symfony Messenger, allowing you to optimize your application without extensive refactoring.

Read more
PHP 8.5
Oskar Stark

What's New in PHP 8.5: A Comprehensive Overview

PHP 8.5 will be released in November 2025 and brings several useful new features and improvements. This version focuses on developer experience enhancements, new utility functions, and better debugging capabilities.

Read more