Basics versions of many php frameworks like symfony, cakephp etc have short life cycles and when release major version upgrade they will have breaking changes that make migration hard. If you have write well documented code, you make continues refactoring in codebase and make use of long life cycle frameworks it's ok.
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Basics versions of many php frameworks like symfony, cakephp etc have short life cycles and when release major version upgrade they will have breaking changes that make migration hard. If you have write well documented code, you make continues refactoring in codebase and make use of long life cycle frameworks it's ok.