> -----Original Message----- > From: Leonard Burton [mailto:leonardburton@xxxxxxxxx] > Sent: 16 November 2005 03:39 > To: php-general@xxxxxxxxxxxxx > > Basically here is the regex I used (I am not the best with regexes): > > $pattern = "/^[0-9]?[A-Z]{1,2}[0-9][A-Z]{1,3}/"; > > Here are how they look > W1W > W1AW > WA1W > AD4HZ > N9URK > WB6NOA > 4N1UBG > > I guess this would be better? > > $pattern = "/^"; > $pattern .= "([0-9][A-Z][0-9][A-Z]{3})|"; //4N1UBG > $pattern .= "([A-Z][0-9][A-Z]{1,3})|"; //N9URK, W1AW, W1W > $pattern .= "([A-Z]{2}[0-9][A-Z]{1,3})"; //WB6NOA, AD4HZ, > WA1W > $pattern .= "/"; You should be able to fold the second and third into: $pattern .= "/([A-Z]{1,2}[0-9][A-Z]{1,3})/" It would be harder, if even possible, to merge this with the first form, due to the requirement for exactly 3 letters vs 1-3; some kind of complicated look-behind might do it, but I don't think I even want to try! Cheers! Mike ------------------------------------------------------------------------ ---------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, JG125, The Library, James Graham Building, Headingley Campus, Beckett Park, LEEDS, LS6 3QS, United Kingdom Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
