Hoooray For arrays!! Or Not in this Case!! Help!

[PHP-Nut]

???

 

Im writing a shopping cart that uses Session variables, i have a form that displays the basket contents in a form so the user can update the item qtys. all was going fine until i tried to write the update script.

 

Basically my idea was to read the qtys on the form and then update them to the newly submitted ones using foreach and the $_POST array..

 

but on submitting the form i get an error

 

Warning: Invalid argument supplied for foreach() in c:\inetpub\wwwroot\kenb_rem\viewbasket.php on line 6

 

The Code is fairly Straight Forward.. here is the line with the error..

<?php if (isset($_POST['update'])) {
foreach($_POST['qty'] as $key =>$val) {

}
}

 

I have used the foreach with session arrays to build the shopping cart contents with no problems...

 

Can somebody help..? Thanks

[kenrbnsn]

Please supply more information, such as what your form looks like.

 

Ken

[PHP-Nut]

the form is just 1 txt field id= qty which reads the qtys from the session varibles ,1 for each line of the basket, and the the button id = update

.

 

the form works pefectly in that i can echo the new qty using echo $_POST['qty'].

 

i just cant get the foreach to read it?

[LemonInflux]

if it's just one value, then it doesn't need an array...?

 

if $_POST['qty'] is from a text field, then you don't need any sort of foreach loop.

[PHP-Nut]

if it's just one value, then it doesn't need an array...?

 

if $_POST['qty'] is from a text field, then you don't need any sort of foreach loop.

 

$_POST['qty'] is an array for example if the form repeats and there is more than 1 instance of $_POST['qty'] as would be the case if more than 1 item was placed into the shopping basket..

 

 

[BlueSkyIS]

in this case, $_POST['qty'] is not an array. it would be an array if you have multiple form fields called qty[]

 

$_POST is an array, and you want the value of the 'qty' key.

[PHP-Nut]

[sOLVED] 

 

in order to make this function correctly i had to use the products id field as a field in the qty textfield on the form..

 

ie product id = 102

 

$_SESSION['cart'] [prod_ID] = 102 // Session varible of Cart for given product

 

when building the form i just had to make sure i used the prod_ID field as a key qty[102] etc..

 

so that when it came to use foreach it knew it was now an array..

 

Thanks Paul.