Hi there!
This is not as simple I guess. We have done this a lot. Actually I cannot give you the exact code here because do not know the page you are fetching, plus it will be quite a long code, but can tell you the sequence. You will have to read the page of other web site by fsockopen() and the store all the page in a variable and print it on your site. In that variable, change/replace the form action to full path on their server so that when a user submits, it can be submitted correctly.
Hope this will help you.Regards
T. A. Barry
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