Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

regular expression question in php preg_match

Posted on 2008-06-16
1
201 Views
Last Modified: 2012-05-05
i'd like to check the following

okay:
'-'
'-1'
'-1212'
'-12.22'

not okay:
'- '
'#'
'-1/1'
'-1,2'
'-1.2.2.2'
'1,2'
'1/1'
'1.2.2'

Thanks
0
Comment
Question by:edyonline
1 Comment
 
LVL 49

Accepted Solution

by:
Roonaan earned 125 total points
ID: 21796047
if(preg_match('/^\-\d+(\.\d+)?$/', $value)) {
  //valid
} else {
  //invalid
}
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Generating table dynamically is the most common issue faced by php developers.... So it seems there is a need of an article that explains the basic concept of generating tables dynamically. It just requires a basic knowledge of html and little maths…
Build an array called $myWeek which will hold the array elements Today, Yesterday and then builds up the rest of the week by the name of the day going back 1 week.   (CODE) (CODE) Then you just need to pass your date to the function. If i…
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

809 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