More often than not, when I have inherited a project built on a common PHP framework the documentation and community knowledge available is limited because the

More often than not, when I have inherited a project built on a common PHP framework the documentation and community knowledge available is limited because the framework used is, most commonly, not the latest version. So you are basically wading through the tall grass of online resources trying to ascertain what knowledge applies to what version, which for some frameworks can differ tremendously between major releases. Many developers love a particular framework and they use it as often as possible and it works well for them, one reason being that over time they become familiar and accustomed to it's strengths, patterns, flaws and idiosyncrasies. But I personally find no pleasure in having to familiarize myself with a crusty old framework that I will never touch again in my career versus well-organized vanilla PHP.