[TYPO3] PHP file in Rich Text Editor

[Nader Emami Salut]

Hello,

Ik have a "PHP" file (combinatie van PHP en HTML) from e old website. I 
have made a new web site and I will use this "PHP" file in one of pages 
of my new website. If I look at the Richt Text Editor van TYPO3, I don't 
see any "import" function. I don't know how I can import the "PHP" file 
in new page!
Wpuld somebody tell me how I can do it?

Regards,
Nader