Sandbox · live PHP

PHP Playground

Not a description of "I know PHP" - actual PHP code, running live on the server, right now. Every demo lives on its own page, shareable on its own.

Adobe Commerce series

The key mechanisms of a typical Adobe Commerce system with real PHP running on the server: architecture, cart rules, layered navigation, indexing and message queues, GraphQL.

Adobe Commerce architecture

Interactive integration diagram (ERP, PIM, OMS, payment, search, CDN, message queue) with the animated path of an order - the series intro.

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Cart engine

Live cart pricing-rule simulator - discount rules, coupons, priority/stacking logic.

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Layered navigation

Magento/Adobe Commerce-style facet filtering over a 240-item catalog - category, color, size, brand and price range, with real result counts.

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Indexer & message queue

Update on Save vs Update by Schedule: mview changelog, cron batches, plus a message queue with retries and a dead-letter queue.

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GraphQL query builder

A visual GraphQL builder, a custom PHP parser with depth and complexity limits, batched resolvers and an execution plan.

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More PHP experiments

Maze

Maze generator and pathfinder - pick from 8 algorithms (BFS, DFS, Dijkstra, A*, greedy, bidirectional BFS, wall follower, dead-end filling), watch them solve live.

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Sorting algorithms

Sorting algorithm visualizer - 11 algorithms (bubble, quick, merge, heap, insertion, selection, Shell, cocktail, comb, radix, Tim) on the exact same array, animated side by side.

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Artwork generator

Procedural graphics with PHP GD - a unique, server-rendered image on every request.

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Language playground

Modern PHP language features (property hooks, asymmetric visibility) with live, executed examples.

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Fourier epicycles

Approximate a drawn or image-extracted curve with rotating circles - a real server-side Fourier transform.

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Enter one or more expressions (implicit multiplication, |x|, n!, conditions, slider parameters, parametric, polar and implicit curves) - the server parses, samples and analyses the curves with its own safe expression parser.

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Fractal generator

Mandelbrot, Julia and Burning Ship sets with PHP GD and real zoom - computed pixel by pixel on the server.

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Image upscaler (super-resolution)

4x enlargement side by side: bicubic, a direction-aware PHP pipeline (DCCI), MMPX for pixel art, and a neural network in your browser - measured and honest.

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