passing name / value pairs in URL

Until the recent version of PHP i've enjoyed being able to pass variables as name/value pairs within my URL. this has been essential for accessing my mysql database. here is an example of a url. getAd.php?id=1 of course that link tells the script to fetch all associated data from a particular table where the ad id = 1. you knew that. now here is my problem. I just upgraded to the newest version of PHP. Now passing name/value pairs isn't an option. I've read the security issues involved, and that's all fine and dandy, but how do pass these values from one page to the other (w/o turning register_globals back on). using a form and posting the value to the next page and accessing the value with $_POST[] isn't an option. there are over 100 links per page dynamically generated using a while loop. the output looks like this: getAd.php?id=1 getAd.php?id=2 getAd.php?id=3 etc... any thoughts?