I'm using FCKeditor which is deprecated for years.
I need to upgrade to CKeditor (to at least 4.4+ however the CKeditor documentation doesn't specify the minimum requirements for each version. What is the PHP version required etc?
Sadly CKeditor has no forum to ask general questions they refer all questions to stackoverflow.
Does anyone knows the minimum requirements?
https://docs.ckeditor.com/ckeditor4/docs/#!/guide/dev_savedata says:
CKEditor helps you create content but it is the role of your website or application to deal with the data created in this way. Saving data is a server-side operation and you are free to implement the save functionality on your own, in any way you like. CKEditor is a pure JavaScript component and it does not offer anything more than JavaScript methods and events to access the data so that you could save it on the server.
As far as I can tell from this description, and from personal experience of the editor, it is an entirely client-side tool. It does not have any server-side component. It doesn't rely on or require PHP in any way at all. You can integrate it with any server-side language or framework to decide to, just by making HTTP requests to / from the server.