473,403 Members | 2,071 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,403 software developers and data experts.

Need help with regular expression

1
if ( $report_id = ~ /^\d+$/ )

can anyone tell me what "~ /^\d+$/ " expects and returns true.
Thanks in advance
Sep 19 '06 #1
1 1116
Rykus
5
if ( $report_id = ~ /^\d+$/ )

can anyone tell me what "~ /^\d+$/ " expects and returns true.
Thanks in advance
If $report_id contains one or more digits (\d+) from beginning(^) to end ($)

This will report true if your $report_id is only numerical values from beginning to end (numerical values being 0 through 9)

Fals if it is anything else (ie there is any whitespace, alpha, or special characters)

So 3207283469028 is valid, but 280720a2037 is not

Hope that helps
Sep 20 '06 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

3
by: Danny | last post by:
I am trying to do a regular expression to search for a url so anything that has http:\\www.hellothere.com but may not have the http:\\ and may not have the www and may not have http:\\www and...
2
by: Mike Andrews | last post by:
Guys, I've got a regular expression that will just not work. I can't get it work properly and I would like to see if someone out there can tell me if I'm doing this wrong, or if there is a...
4
by: Neri | last post by:
Some document processing program I write has to deal with documents that have headers and footers that are unnecessary for the main processing part. Therefore, I'm using a regular expression to go...
3
by: Joe | last post by:
Hi, I have been using a regular expression that I don’t uite understand to filter the valid email address. My regular expression is as follows: <asp:RegularExpressionValidator...
18
by: Q. John Chen | last post by:
I have Vidation Controls First One: Simple exluce certain special characters: say no a or b or c in the string: * Second One: I required date be entered in "MM/DD/YYYY" format: //+4 How...
3
by: Lucky | last post by:
hi guys, i'm practising regular expression. i've got one string and i want it to split in groups. i was trying to make one regular expression but i didn't successed. please help me guys. i'm...
17
by: Mark | last post by:
I must create a routine that finds tokens in small, arbitrary VB code snippets. For example, it might have to find all occurrences of {Formula} I was thinking that using regular expressions...
6
by: deepak_kamath_n | last post by:
Hello, I am relatively new to the world of regex and require some help in forming a regular expression to achieve the following: I have an input stream similar to: Slot: slot1 Description:...
14
by: Chris | last post by:
I need a pattern that matches a string that has the same number of '(' as ')': findall( compile('...'), '42^((2x+2)sin(x)) + (log(2)/log(5))' ) = Can anybody help me out? Thanks for any help!
0
by: altavim | last post by:
Usually when you make regular expression to extract text you are starting from simple expression. When you got to know target text, you are extending your expression. Subsequently very hard to ready...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.