Re: [PHP] regular expression question

At 11:32 AM 8/31/2007, Per Jessen wrote:
Matthew Lasar wrote:

> But I don't understand why the second half of the regular expression
> works. I'm talking about this part:
>
> @([-a-z0-9]+\.)+[a-z]{2,}/";
>
> why is it able to detect repeated sections of the email address after
> "@" that are separated by periods? like "@email.alaska.com" . It
> looks to me like it's only looking for one example of that pattern.
> Does the "()" allow an unlimited number of patterns to pass?

No, but the following '+' does.

But how? The +[a-z]{2,} seems to allow at least two a-z clusters, but it doesn't include a period. /ml


/Per Jessen, Zürich

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php



--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.484 / Virus Database: 269.13.0/980 - Release Date: 8/30/2007 6:05 PM
.

Relevant Pages

  • Re: RegEx: How to ignore the number of whitespaces?
    ... a "simpler" regular expression syntax is likely to bite you eventually, ... but that some of these character sequences may be "marked" as ... This is a regular expression "if" conditional statement, ... do not understand why the pattern "personal computer" will only match ...
    (microsoft.public.dotnet.framework)
  • Re: Expert script (.bat) writers help needed (strip double-quote from string)
    ... Sets or returns the regular expression pattern being searched for. ... Always a RegExp object variable. ... May include any of the regular expression characters defined in the table in the Settings section. ...
    (microsoft.public.windowsxp.help_and_support)
  • FAQ 6.23 How do I match a regular expression thats in a variable?
    ... How do I match a regular expression that's in a variable? ... We don't have to hard-code patterns into the match operator (or anything ... have the pattern in $regex, you use that variable in the match operator. ... and the pattern still has to be valid or Perl will complain. ...
    (comp.lang.perl.misc)
  • FAQ 6.23 How do I match a regular expression thats in a variable?
    ... How do I match a regular expression that's in a variable? ... We don't have to hard-code patterns into the match operator (or anything ... have the pattern in $regex, you use that variable in the match operator. ... and the pattern still has to be valid or Perl will complain. ...
    (comp.lang.perl.misc)
  • FAQ 6.23 How do I match a regular expression thats in a variable?
    ... How do I match a regular expression that's in a variable? ... We don't have to hard-code patterns into the match operator (or anything ... have the pattern in $regex, you use that variable in the match operator. ... and the pattern still has to be valid or Perl will complain. ...
    (comp.lang.perl.misc)