Stop Writing Massive if-else Blocks: Master the Strategy Pattern in PHP & Laravel

1. Hook & Problem Statement You're a Laravel developer. You need to build a shipping cost calculator. You start simple. if ($country === 'USA') { return 10; } Then the business adds: "We need different pricing for express shipping." So you add elseif ($shipping === 'express'). Then: "Different prices for heavy items." Another elseif. Then:...