lunarhotel.co.uk

{mosignorehit} 

So if you're looking for domain name drops, you need to know the domain name and of course the expiry date. All well and good, but running a whois query on a few domains you'll soon find that the whois record is not always returned in the same format or layout. This is because of the different companies and top level registrars that look after various aspects of the domain name system. After muchos hunting for something that could reliably extract the date from a whois record, I came up with zip. So here my function for achieveing that. A couple of things before you look at it though

• it seems fairly reliable, Ive not come across a whois record yet that it wont extract the expiration date from (with the exception of whois records that dont tell you, but I think you can let me off for that!)
• Many of you regular expression techies out there will look at this and think "Holy s**t! this is horrific!" And of course you would be correct. Im afriad regular expressions arent my forte, so it was a bit of learning exercise
• If you find a domain name that it cant pick up, you can sort it by just adding a new regular expression to the list

So without further ado, here it is:

function expireson($whoisrecord) {

        $regexes=array();
        $regexes[]="/expires (on)*:*\s*/";
        $regexes[]="/Expires\s*:*/";
        $regexes[]="/Expires on:*(\.{5,20}:)*/";
        $regexes[]="/expiration date\s*:/";
        $regexes[]="/Expiration Date\s*:/";
        $regexes[]="/Expiration date\s*:/";
        $regexes[]="/Expiry Date:*(\.{5,11}\s)*/";
        $regexes[]="/Expiration Date\s*(\.{5,17})*:/";
        $regexes[]="/expiration\s*:/";
        $regexes[]="/expiration-date:\s*/";
        $regexes[]="/Expiration Date\s*(\.{5,17})*\s/";
        $regexes[]="/expired on\s*/";
        $regexes[]="/expire:*(\s{1,22})*/";
        $regexes[]="/Expire Date:\s*/";
        $regexes[]="/Expire on(\.{5,17})*\s*/";

        foreach($regexes as $regex) {
                preg_match_all($regex,$whoisrecord,$match,PREG_SET_ORDER);
                if(count($match)>0) {
                        $expirespos=strpos($whoisrecord,$match[0][0])+strlen($match[0][0]);
                        # get the line where the match appears and get the bit from the end of the match to the end of the line
                        # this helps things work when the expiration date is on the last line
                        $whoisrecord .="\n";
                        $expiresline=trim(substr($whoisrecord, $expirespos,strpos($whoisrecord,"\n",$expirespos)-$expirespos));
                        $expiresline=str_replace("(registry time)","",$expiresline);
                        # check to see if there's a . at the end
                        if(substr($expiresline,-1,1)==".") {
                                $expiresline=substr($expiresline,0,strlen($expiresline)-1);
                        } //end if
                        # so , we should now have a date (or something like)
                        # so lets convert it into a php date.
                        $expiresline=returndate($expiresline);
                        return $expiresline;
                } //end if
        } //end foreach
        return false;
} //end function

Usage is pretty simple, just call it, and pass it the full whoisrecord.

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