Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Re^3: check if string contains anything other than alphanumeric

by FunkyMonk (Chancellor)
on Aug 12, 2007 at 09:05 UTC ( [id://632037]=note: print w/replies, xml ) Need Help??


in reply to Re^2: check if string contains anything other than alphanumeric
in thread check if string contains anything other than alphanumeric

If a character class starts with ^, it is a negated character class. That is, it will match any character that is not in the class. So, /[^a-zA-Z0-9]/ will match any character that is not a letter or digit.

See perlretut for a tutorial on regexps and perlre for the details.

update: My 200th node :)

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://632037]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others exploiting the Monastery: (3)
As of 2025-06-18 02:06 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?
    erzuuliAnonymous Monks are no longer allowed to use Super Search, due to an excessive use of this resource by robots.