PHP code within pages

Hi,

I will be using a thrid party software to run banner ads both on 'additional pages' and on the 'standard' Dolphin pages..
I am running Dolphin7 ..

Here is an example of the code that will be inserted, do anybody have experience with adding PH P blacks to pages? if so, can you see any issue inserting code like this??

<?PHP
$f = fopen('http://www.scripts-demo.com/admanagerpro/show.php?ad_type=1&incl=1&ip='.getenv('REMOTE_ADDR').'&url='.urlencode(getenv('HTTP_HOST').getenv('REQUEST_URI')),'r');
echo stripslashes(fread($f,100000));
fclose($f);
?>

Any input isgreatly appreciated BEFORE I buy the 3rd party software :)