Re: ICQ # validation

Well ... - the {7,9} means that the previous char/group should repeat 7 to 9 times ... - ^ means the beginning of the string - $ means the end of the string So everything, that validates, is 7 to 9 numbers. "123456789 This is a test" won't validate - it contains chars instead of $ (end of string) after [0-9]{7,9} = 7 to 9 numbers. And yes, you can use something like [[:digit:]] but I must admit I don't use that much. Ales <SLanger@spirit21.de> wrote in message news:OF09467EC1.D09E7DC2-ONC1256CDF.002C7A3A-41256CDF.002CDF08@spirit21.de.. . > > if(ereg("^[0-9]{7,9}$", $_REQUEST["icqnumber"])) { > > >> print("a-okay!"); > > >> } else { > > >> print("error msg"); > > >> } > > Although I'm not too familiar with regexp I'd say the code validates > because the icq number you are providing actually confimrs to the pattern. > The first seven to nine digits contain only numbers so the pattern is > true. Th ce pattern does not check the length of your provided string. > If I'm correct than "123456789 This is a test" will also proof to be > correct. So you have to do two things first check the whole argument for > digits like ereg('^[0-9]{'.strlen($_REQUEST['icqnumber']).'}', > $_REQUEST['icqnumber']) and check length separatly. (U can also use > [[:digit:]]) Or use the code as mentioned before. > In your place I would not assume anything about the length of the icq > number. > > Hope that helps > Stefan > > P.S.: Please correct me if I'm wrong with the above!!!!