note 18745 modified in function.ereg by sander

The postcode example listed here isn't correct - it won't correctly detect Inner London postcodes (and others?) with an extra letter, eg: EC1M 3AA I've also ammended it so that the space is optional: if(eregi('^[A-Z]{1,2}[0-9]{1,2}[A-Z]? ?[0-9][A-Z]{2}$',$postcode) { print "You have a valid postcode!"; } --was-- The postcode example listed here isn't correct - it won't correctly detect Inner London postcodes (and others?) with an extra letter, eg: EC1M 3AA I've also ammended it so that the space is optional: if(eregi('^[A-Z]{1,2}[1-9]{1,2}[A-Z]? ?[1-9][A-Z]{2}$',$postcode)) { print "You have a valid postcode!"; } http://www.php.net/manual/en/function.ereg.php