[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_28":-5,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_51":52,"_53":54,"_55":56,"_57":58},"routes/_store+/_readers+/email_author.$slug/route",{"_9":10,"_11":-5},"book",{"_12":13,"_14":15,"_16":17,"_18":19,"_20":21,"_22":23},"currentUser","id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvNzg1MDI","title","Legacy to Symfony","state","published","contactAuthorMethod","email","aboutText","

For a mid-sized to enterprise PHP application, a comprehensive full-stack migration ranges from approximately 100,000 to 200,000 EUR on average depending on size and complexity. It will run for months, cross financial quarters, and put the engineer leading it under a level of organisational pressure that no amount of clean architecture prepares them for. The difference between a migration that ships and one that gets quietly abandoned is not the quality of the code. It is the quality of the process.

This is the book that documents this process end to end.

Legacy to Symfony is a complete, opinionated blueprint for migrating a PHP monolith to Symfony with zero server downtime. It covers every layer of the application — infrastructure, database, authentication, business logic, templates, and deployment — with exact tooling, real CLI output, and architectural decisions drawn from real world migrations. It also covers what technical books consistently ignore: the organisational side of a project this long — managing the politics and pressure, communicating with stakeholders and keeping a team focused when the business loses patience. Not theory. Just a process that works.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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