Solved

Validating varying substrings

Posted on 2012-03-19
4
161 Views
Last Modified: 2012-06-21
Hello,

I am not that experienced in regex and I struggle with the following

$string = 'DEFAULT:1:  TITLE:5    AXIS:6:     UNIT:13:     LEGEND:21:   WATERMARK:1: ';
print "yes\n" if ($string =~ /^[^#]*:[0-9]+:[^#]*( +[^#]*:[0-9]+:[^#]*)*$/i)

Open in new window

This code should accept TEXT:9:TEXT  or  TEXT:99:  or  TEXT:2:"TEXT"   but should not accept
TEXT:9 or   TEXT:   or  TEXT.

The regex I have here does accept TEXT:5  which it shouldn't  :-)
0
Comment
Question by:Marc_Engrie
  • 2
4 Comments
 
LVL 84

Accepted Solution

by:
ozo earned 125 total points
ID: 37736634
/^[^#:]*:[0-9]+:[^#:]*( +[^#:]*:[0-9]+:[^#:]*)*$/
0
 

Author Comment

by:Marc_Engrie
ID: 37737272
Yes !!!

However I do not fully understand [^#:]*:

Can you enlighten me on this so I learn something today ;-)  

Thx a lot
0
 
LVL 26

Expert Comment

by:wilcoxon
ID: 37737896
[^#:]* says to match 0 or more characters that are not # or :
0
 

Author Comment

by:Marc_Engrie
ID: 37737910
Understood and learned !

Thx :-)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Do you hate spam? I do, and I am willing to bet you do as well. I often wonder, though, "if people hate spam so much, why do they still post their email addresses on the web?" I'm not talking about a plain-text posting here. I am referring to the fa…
Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface.  I made a script to download the Alert Log, look for errors, and email me the trace files.  In this article I'll describe what I did and share my script.
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now