107640 Domain Exists Function

Hello, I need a php script to determine if a domain name exists or not. It has to be the fastest way possible. How it works: A word is given, lets say aol. Your script will check if [login to view URL] exists and if yes return the value $c1 = 1 - else it will return $c1 = 0. If $c1 = 0 it will check [login to view URL] and return $n1 = 1 if it exists or $n2 = 0 if it does not exist. If it not exists it will check [login to view URL] and return $o1 = 1 if it exists or $o1 = 0 if it does not. If [login to view URL] exists we do not have to check for net and org. If net does not exist we check org. If none of the domains exist we return $ne = 1 - else we return an echo telling us [login to view URL] / net or org exists. Please remember: We check first com then net then org and stop checking if com was found to save processing time. I am requesting a fully working demo before accepting a bid as its just a few lines of code. I am interested in the fastest way as I have it already working by using fsockopen but I am looking for a faster method. Post your demos with a form where I can add a word to check to the messageboard. Unrealistic bids will be removed and the user banned from future bids.