Linear Code Mastery for PHP: 100 Progressive Problems
100 backend engineering tickets in strict progressive order, split across two fictional companies — NexaFlow (Tasks 1–50) and ChronoShop Global (Tasks 51–100). Every task adds exactly one new concept to the one before it. Every solution is written to production-grade PHP 8.4/8.5 standards: strict types, final classes, full PHPDoc, no shortcuts.
Written by Abdulloh Abdusamadov — backend engineer, 2+ years shipping production PHP systems.
How every task works
The same three parts, in the same order, for all 100 tasks.
The problem is framed exactly as a real engineering ticket would be.
The thinking is broken down before any code is shown, so you get stuck productively.
The production-grade solution, to compare against your own attempt.
Interactive Workbook Preview
Review exactly what level of backend engineering depth you will master inside.
See exactly how the problems are structured
Get the free mini-book: the unabridged breakdown — full setup, constraints, and architecture — for Task 11, Task 45, and Task 95.
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Linear Code Mastery for PHP: 100 Progressive Problems
Master array filtering optimizations, complex bitwise manipulation masks, internal runtime memory configurations, and rigorous production-level backend logic design patterns.
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