PHP Menu & Site Conversion

I’ve written a set of small, standalone PHP sites over the years and now need everything brought under one consistent codebase. There’s no framework involved—plain PHP only—so please be comfortable working without Laravel, CodeIgniter, or similar libraries.

Here’s what I need:

• Use the ready-made header menu design files I’ll provide (HTML/CSS mock-ups) and turn them into reusable PHP includes.
• Refactor my main site so that every page pulls this new header from a single source file.
• Convert twenty separate websites—covering informational pages, e-commerce product catalogues, and WordPress-style blog articles—into clean, framework-free PHP. After each conversion, add them to the new header navigation so visitors can move between properties seamlessly.
• Work in modules; I’ll release payment after each completed block (menu first, then batches of site conversions).

Acceptance will be based on:
– Zero broken links in the consolidated menu.
– Identical visual match to the supplied design.
– Each migrated site passing an HTML/PHP validation test and loading noticeably faster than its original version.

If you’re comfortable hand-coding PHP, HTML, CSS, and a bit of JavaScript for dropdown behaviour, let’s get started—I’ll send you the current file structure and design assets as soon as we agree on the first milestone.