Solved

php - processing checkboxes

Posted on 2014-04-15
3
304 Views
Last Modified: 2014-04-15
Hello,

I have a php program (attached) designed to process checkboxes on a form. Note the echo was to debug & find out why it wasn't working.

Also attached is the HTML page, as it existed upon calling the php program.

Note in the html program, there are several checkbox elements that are NOT checked. Those elements are NOT being picked up in the php program which defeats the whole purpose.

Why are the unchecked elements NOT being picked up?
updt-base-citylinks.php
manage-base-citylinks.htm
0
Comment
Question by:Richard Korts
  • 2
3 Comments
 
LVL 109

Accepted Solution

by:
Ray Paseur earned 500 total points
ID: 40002869
Unchecked checkboxes are not present in the request variables.  They are not "there and empty;" they are simply missing.  This is the way that it works.  Dumb design, but an unfortunate fact of life.  Please read this over and see if it helps with the understanding.
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/A_5450-Common-Sense-Examples-Using-Checkboxes-with-HTML-JavaScript-and-PHP.html
0
 

Author Comment

by:Richard Korts
ID: 40002890
I thought that MIGHT be the case, but I thought THAT was a stupid idea to even consider

I can envision a workaround.

Thanks
0
 
LVL 109

Expert Comment

by:Ray Paseur
ID: 40002897
The workaround might be an input of an identical name attribute with type="hidden" as described in the article.  I have used that successfully.  It's a PHP-only solution because some languages that use raw post input require specialized programming to deal with the request data.  But if you're using PHP and you use the $_GET or $_POST arrays, you'll be on firm ground.

Thanks for the points, ~Ray
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

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…
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…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

832 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