Adding quantitys

Local_Hero

In my store the user can click a button to "add fields". This makes another textbox for quantitys. The field is labeled

<input name="product_options_amount<?php echo $e ?>" type="text" value="<?php echo($_POST["product_options_amount".$e]);?>" size="3"

I am using javascript to add together many other variables including this, but I would appreciate any feedback on how to add this up depending on how many boxes are filled out. If you need more information, let me know. Thanks

bradgrafelman

What is $e? Is it a number, creating field names such as 'product_options_amount1', 'product_options_amount2', etc.? If so, you could retreive those values like so:

for($i = 1; isset($_POST['product_options_amount'.$i]; $i++) {

// code to execute for each field

// echo them like this:

echo $_POST['product_options_amount'.$i];

// or assign them to variables:

${'product_options_amount'.$i} = $_POST['product_options_amount'.$i]; // this creates $product_options_amount1 and so on

}

Local_Hero

I'm sorry, I didn't specify. Yes, $e makes it so the names are unique by counting up by one. My question is, if a user has added a few fields, how would I add the numbers up? Especially not knowing how many they used? Thanks.

bradgrafelman

By using the code I posted.

This line:

for($i = 1; isset($_POST['product_options_amount'.$i]; $i++) {

uses a [man]for/man statement that incrementally adds 1 to $i until there are no POST'd fields with that number.