Integrating Online/web-based Word Processor with PHP web application

I need to integrate a web-based word processor to my PHP application. Here is the workflow:

1. User selects a file to edit
2. The document opens up in a browser/cloud based editor
3. The document is edited as per requirement
4. The user requests for the document to be saved
5. The document is saved back in the server.

There are two options I've figured out for myself.

• Host a web application package on my server that does the job of a word processor. E.g. - CKEditor
• Utilize an existing service's API to do the job. E.g. - Zoho Remote API

Kindly suggest what would be a better option and also if there are more options that I haven't considered. I am looking for a solution that is simple and quick to implement. Looking forward to your suggestions before actually getting on with the project.

via Chebli Mohamed