Many actions in WordPress will fire multiple times, which can lead to performance drags and undesired/intuitiveness results. Pippin Williamson points out that you can check how many times an action has already run, and modify your code to respond accordingly.
Video: I presented on this topic at WordCamp Dayton 2014. It’s very common for developers to customize and extend existing plugins to fit their own needs, which is one of the great advantages of using open-source software. They often do it by making their changes directly to the plugin, though, which creates a security vulnerability […]
In an ideal world you’d never have to fork a plugin, because developers would always make their plugins extensible with hooks, just like WordPress itself does. But unfortunately that’s not usually the case, and it’s sometimes necessary to directly modify a plugin to make it do what you need. In those cases, you want to […]