Attach file in mail function

I want to attach html file in my mail sending using php mail function; anybody knows how to attach file in mail function?;

Hi Demots,

Sending attachments in PHP isn't too simple, but try the following URL:

Usually it is more efficient to simply include a URL to the location of the HTML file.

If you'd prefer to actually write to somebody using HTML, just add a Content-type: text/html to the fourth header.

Cheers,

David

I'm also want to know how can I do that.
http://misr.cjb.net