Solved

PHP preg_replace for Time

Posted on 2011-03-03
5
397 Views
Last Modified: 2012-06-27
I need a PHP function[s] (? preg_replace) that will convert different entered time formats to the standard hh:mm.
Possible entered formats include:
hh:mm
h:mm
hh.mm
h.mm
hhmm
hmm
h
0
Comment
Question by:gorrie67
  • 4
5 Comments
 
LVL 35

Expert Comment

by:Terry Woods
ID: 35033710
Something like this should work a treat for all your examples. Will test it shortly.
$patterns = array("/^(\d)\D?(\d\d)$/", #one digit hour
                  "/^(\d\d)\D?(\d\d)$/", #two digit hour
                  "/^(\d)$/");
$replacements = array("0$1:$2",
                      "$1:$2",
                      "$1:00");
$result = preg_replace($patterns, $replacements, $time);

Open in new window

0
 
LVL 35

Expert Comment

by:Terry Woods
ID: 35033733
It passed testing as is with your example data. To wrap it in a function:
function to_std_time($time) {
  $patterns = array("/^(\d)\D?(\d\d)$/", #one digit hour
                    "/^(\d\d)\D?(\d\d)$/", #two digit hour
                    "/^(\d)$/");
  $replacements = array("0$1:$2",
                        "$1:$2",
                        "$1:00");
  return preg_replace($patterns, $replacements, $time);
}

Open in new window

0
 
LVL 35

Expert Comment

by:Terry Woods
ID: 35033736
Of course you might like to add criteria to handle invalid formats too.
0
 

Author Comment

by:gorrie67
ID: 35033751
Thanks TerryAtOpus

All works fine, except for inputs of hh only, ie 8, 12, 13

these need to be formatted to hh:mm, ie 08:00, 12:00, 13:00

Can this be added to function?
0
 
LVL 35

Accepted Solution

by:
Terry Woods earned 125 total points
ID: 35033757

function to_std_time($time) {
  $patterns = array("/^(\d)\D?(\d\d)$/", #one digit hour
                    "/^(\d\d)\D?(\d\d)$/", #two digit hour
                    "/^(\d)$/", #one digit hour, no minutes
                    "/^(\d\d)$/"); #two digit hour, no minutes
  $replacements = array("0$1:$2",
                        "$1:$2",
                        "0$1:00",
                        "$1:00");
  return preg_replace($patterns, $replacements, $time);
}

Open in new window

0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

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

Suggested Solutions

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
These days socially coordinated efforts have turned into a critical requirement for enterprises.
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…
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…

785 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