I’ve created plugin that goes to wordpress plugin repositories. Now, I need to create another plugin (sub plugin or child plugin you may call) that require this certain plugin to be already installed and activated.
I know I can use register_activation_hook. However, how do I check using that hook? Or, maybe there’s another solution exists?
There is
is_plugin_active()function.Other method is to check if functions or classes, specific to required plugin, exist. Some plugins explicitly define their own constants for this, typically with version number and/or other identifying info.
There has been some developments to make extension dependence logic more generic, such as Plugin Dependecies, but they hadn’t gained widespread adoption so far.