lack of Error checking in tutorial code

Codewalkers Forums Sponsor:

AT&T devCentral & BlackBerry(r) Webcast Series: BlackBerry and GPS -Build Location Awareness into your BlackBerry Applications, July 10th-1:00PM EST. Register Today!

May 28th, 2005, 04:32 PM

Rupert

Join Date: Apr 2007

Posts: 1

Time spent in forums: < 1 sec
Reputation Power: 0

lack of Error checking in tutorial code

Hi first let me say thanks for your tutorials.

I have found the PHP tutorial

http://codewalkers.com/tutorials/12/4.html

basicly very useful.

But the code in this tutorial works fine as long as your check one of the 3 checkboxes on the form.

But if you don't check any checkbox it generates the following error:

Warning: Invalid argument supplied for foreach() in ...

Unfortunatly at the moment I don't have enough PHP skill to work out how to write the error checking required to prevent this.

Can you add this to the tutorial?

Regards,

Rupert Russell
r.russell at ballarat.edu.au

May 28th, 2005, 06:40 PM

Andrew

Moderator

Join Date: Apr 2007

Location: United Kingdom

Posts: 1,937

Folding Points: 2429 Folding Title: Novice Folder

Time spent in forums: 4 Days 1 h 57 m 37 sec
Reputation Power: 3

RE: lack of Error checking in tutorial code

I believe that the idea of the tutorial is to demonstrate checkboxes etc and not to bulk up the example with error handling code. The idea of the tutorials is to demonstrate how to do something and the idea is that the code in most of them can be expanded and worked upon (eg by adding error handling etc).

However it should be quite easy to add basic error handling to this example something like this should do the trick.

php Code:

Original - php Code
if(count($_POST['mycheckbox']) < 1){ die("ERROR: You must check at least one checkbox!"); }else{ foreach($_POST['mycheckbox'] as $value) { echo "<BR>You clicked checkbox number ".$value."n"; } }

 
if(count($_POST['mycheckbox']) < 1){
die("ERROR: You must check at least one checkbox!");
}else{
foreach($_POST['mycheckbox'] as $value) {
    echo "<BR>You clicked checkbox number ".$value."n";
}
}

Viewing: Codewalkers Forums > Other > Tutorials > lack of Error checking in tutorial code

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump