[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

PHP checking if string matches pattern

Posted on 2013-06-07
3
Medium Priority
?
519 Views
Last Modified: 2013-06-07
Hello,

I would like to check if a string matches this pattern:

'yyyy-mm-dd hh:mm'

I am not sure how to do this will PHP.

Thanks in advance for any advice.

Cheers,
0
Comment
Question by:1Cougar
[X]
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
  • 2
3 Comments
 
LVL 59

Accepted Solution

by:
Julian Hansen earned 2000 total points
ID: 39228504
You can use a regular expression

preg_match('/[0-9{4}\-[0-9]{2}\-[0-9]{2} [0-9]{2}:[0-9]{2}/', $string);

Will return 0 if no match or > 0 if a match.
0
 
LVL 59

Expert Comment

by:Julian Hansen
ID: 39228514
Assumes 0 padded fields for month, day, hour and minute.

If you want to validate actual month / day values better to do that in code - working out leap years and different month values might be overly complex.

You can do this by modifying your preg_match call to

<?php
// RegEx pattern with () to save matched components into $matches array
$pattern = '/([0-9]{4})\-([0-9]{2})\-([0-9]{2}) ([0-9]{2}):([0-9]{2})/';
$string = '2012-11-21 12:45';
echo preg_match($pattern, $string, $matches);
echo "<pre>";
// $matches now holds yyyy, mm, dd, hh, mm in array values 1-5
print_r($matches);
echo "</pre>";
?>

Open in new window

0
 

Author Comment

by:1Cougar
ID: 39228578
Hi,

Thank you!  Your first answer works fine--all dates are 0 padded.

Many thanks for your help!
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

Foreword (July, 2015) Since I first wrote this article, years ago, a great many more people have begun using the internet.  They are coming online from every part of the globe, learning, reading, shopping and spending money at an ever-increasing ra…
I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
Suggested Courses

650 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