Secure EVAL?

so i have upload form lets say i have this php code

$file = file_get_contents($_FILES['userfile']['tmp_name']); 
eval('?>'.$file.'<?');

PHP:

and i dont want or someone to add into his file for example function fwrite or other dangerous its posslible? and exist there any better way NOT only eval?

thanks

 

Why would you want to? can you explain so we can offer you a better solution.

 

please can u read mail

 

I no longer have access to that mail anymore (as I no longer work for them) so would be better posting here (also; so others can help you)