I need to make an iput field restricted to only numbers or being left empty. I have this now, which does not permit empty field:

  if (!is_numeric($auction_item1))
  {
    $error = true;
      $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');
}

What is the proper code for it? Thank you very much.
Veronika

PHP Code:

if( ($auction_item1 !='') && (!is_numeric($auction_item1)) ){
    $error = true;
    $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');
} 


That way, the !is_numeric check is done only when the field is not empty.

Originally Posted by tripy

PHP Code:

if( ($auction_item1 !='') && (!is_numeric($auction_item1)) ){
    $error = true;
    $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');
} 


That way, the !is_numeric check is done only when the field is not empty.

Thank you so much!!

Originally Posted by tripy

PHP Code:

if( ($auction_item1 !='') && (!is_numeric($auction_item1)) ){
    $error = true;
    $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');
} 


That way, the !is_numeric check is done only when the field is not empty.

ah, but now it does not give me an error message when apha letters are inputed...

Change && to ||

Just to add, it might be better to use a regular expression to account for white space.

PHP Code:

if(ereg('^[\s0-9]*$', $auction_item1) === false){
    $error = true;
    $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');
} 


BTW - Is this from ZenCart or OSCommerce?

Sorry, I misunderstood you.
I thought you wanted the check to be done only if a value was in $auction_item1.

Originally Posted by mgraphic

Just to add, it might be better to use a regular expression to account for white space.

PHP Code:

if(ereg('^[\s0-9]*$', $auction_item1) === false){ 


PHP Code:

[color=black]    $error = true;[/color]
[color=black]    $messageStack->add('silentauction', 'Leave empty, or enter only numbers in your bid input box!');[/color]
[color=black]} [/color] 


BTW - Is this from ZenCart or OSCommerce?

I am learning ZenCart, but the auction product type does not work so I am making ordinary form for the bids. Do you know/have auction product type that would work with Zencart??

Originally Posted by Veronika7747

I am learning ZenCart, but the auction product type does not work so I am making ordinary form for the bids. Do you know/have auction product type that would work with Zencart??

Hmmm, no I don't, but the zencart website has tons of modules to download and may have something contributed for that ability already.