how to activate plugin network-wide, and save setting across sites

I am developing a plugin, which will be used on single site, as well as multi-site.

How to make plugin active network-wide, code required.

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Also, how to save settings network-wide?

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1 comment

  1. Plugins can be activated network-wide by using the “Network Activate” link, or by placing the Plugin’s folder inside the wp-contentmu-plugins directory.

    For network-wide settings versus site-specific settings, I would look at how other Plugins implement such settings, such as WordPress MU Domain Mapping.