Plugin In Mu Plugins Folder Won T Load On Sub Sites In Wordpress Today i had an issue where i dropped a plugin into the “mu plugins” folder on a wordpress multisite installation, and the plugin failed to load. after doing some digging, i discovered that certain plugins need additional help to load. I found out there is a global constant in wordpress called wpmu plugin dir that will help solve this problem. create your custom plugins in mu plugin sub directories as needed, and then load them from a single file. example: then create a single file in the mu plugins and name it anything.

Wordpress Mu Plugin Folder Mu plugins behave a bit differently as twerking n00b hinted at and must have an init file in the root of the mu folder (unlike normal plugins). the structure you should aim for is one init file per mu plugin, and then the folder with the actual plugin code. If you run wp now from a folder that has an existing wordpress install with an mu plugins folder, the mu plugins folder from that install is not loaded or parsed causing the site to fatal error if any plugins try to use a function in them. Must use plugins do not show in the default list of plugins on the plugins page of wp admin (although they do appear in a special must use section) and cannot be disabled except by removing the plugin file from the must use directory, which is found in wp content mu plugins by default. I tried to create a simple hello world plugin and it doesn’t work when i put it in mu plugins folder. i check the php error logs to and there is no trace of the plugin, or even of the mu plugins folder.

How To Install And Allow Plugins On Your Wordpress Mu Must use plugins do not show in the default list of plugins on the plugins page of wp admin (although they do appear in a special must use section) and cannot be disabled except by removing the plugin file from the must use directory, which is found in wp content mu plugins by default. I tried to create a simple hello world plugin and it doesn’t work when i put it in mu plugins folder. i check the php error logs to and there is no trace of the plugin, or even of the mu plugins folder. We tried removing the contents of the mu plugins folder then quickly pressing activate on the cloudflare flexible ssl and a dozen other little twists but nothing worked. You can't defer the load, no, but you can move the code in the mu plugin that requires on other things to be loaded into action hooks for actions that are triggered later in the load order:. The problem is wordpress doesn't load files in sub folders, that means when you put a plugin as a folder into mu plugins, it won't be loaded. to solve this problem, i use a simple trick: create a simple php file in mu plugins and include all plugins' main files. for more details, let's look at my mu plugins:. You could get around this by creating an mu plugin to make wordpress automatically included mu plugins stored in subdirectories, but as they are not found by wordpress by default, they won’t appear in the must use plugins list, so you won’t be able to see which must use plugin is installed in subdirectories without looking at the mu plugins.