Regex help - Printable Version +- CodeIgniter Forums (https://forum.codeigniter.com) +-- Forum: Archived Discussions (https://forum.codeigniter.com/forumdisplay.php?fid=20) +--- Forum: Archived Libraries & Helpers (https://forum.codeigniter.com/forumdisplay.php?fid=22) +--- Thread: Regex help (/showthread.php?tid=26170) |
Regex help - El Forum - 01-07-2010 [eluser]gigas10[/eluser] Can someone please help me, my regular expression is not doing what I need it to do. What I need is 4 characters, a-z uppercase or lowercase, followed by at least 1 digit to inifinite amount of digits. Current I have: Code: /^\w{4}\d+$/ It's weird, test cases I've tried: ssss2 - Succeed ssss2222 - Succeed s2 - Fail sss2 - Fail s2323424 - Succeed Seems its treating \w to work even if digits are supplied, can anyone help me? Thank you. Regex help - El Forum - 01-07-2010 [eluser]danmontgomery[/eluser] instead of \w use [A-Za-z] Regex help - El Forum - 01-07-2010 [eluser]gigas10[/eluser] I thought I had tried that, apparently there is a big difference in putting A-Za-z inside of () brackets compared to [] brackets. Thanks for the help. Regex help - El Forum - 01-07-2010 [eluser]Jamie Rumbelow[/eluser] Just for clarification gigas, () tries to match everything it's contents. Square brackets [] specify a range of characters. If you don't know the difference, it can get pretty confusing! Jamie Regex help - El Forum - 01-07-2010 [eluser]Sean Gates[/eluser] For reference in this thread: if you are using a mac there is a great tool called RegExhibit. Works beautifully to quickly test and edit you regular expressions. Regex help - El Forum - 01-09-2010 [eluser]Yorick Peterse[/eluser] Untested, but should do the trick: Code: /^[a-zA-Z]{4}[0-9]+$/ |