[SOLVED] array_combine() help

[djones]

I need a little help getting the form values combined into an array. I have two fields:

 

<input type="text" name="qty[]" id="qty_'.$i.'" class="qty_input" value="'.$qty.'" />
<input type="hidden" name="cart_id[]" id="cart_id_'.$i.'" value="'.$cart_id.'" />

 

And I need to combine them into an array so I make sure I update the correct quantity with the cart id:

 

$array_qty = array($_POST['qty']);
$array_cart_id = array($_POST['cart_id']);

$qty_cart = array_combine($array_qty, $array_cart_id);

foreach($qty_cart as $qty_u => $cart_id_u){

// DO my update SQL here...

}

print_r($qty_cart);

 

It's not combining them. Any help?

[JasonLewis]

You don't need to put the array() around the POST values, since it will automatically become an array,

[Barand]

And put the id as the key in the combined array

 

$qty_cart = array_combine($array_cart_id, $array_qty);

 

(The key must be unique so if qty is the key and there are several values of, say, 1, then you lose all but one of them.)

 

[djones]

I adjusted Barand. Thanks

 

ProjectFear: if I remove the array() from the POST I get this error:

 

Warning: array_combine() expects parameter 1 to be array

[JasonLewis]

Are both fields being posted correctly? Parameter 1, that is now the $array_cart_id right?

 

Do a print_r on it and see if it is returning an array.

 

print_r($array_cart_id);

 

It could be that your field isn't populating correctly.

[djones]

Hmmm I did what you mentioned and nothing prints:

 

$array_qty = $_POST['qty'];
$array_cart_id = $_POST['cart_id'];

//$qty_cart = array_combine($array_cart_id, $array_qty);

//print_r($qty_cart);
print_r($array_qty);

 

Here are some actual field examples, so there is data there:

 

<input type="text" name="qty[]" id="qty_2" class="qty_input" value="2" />
<input type="hidden" name="cart_id[]" id="cart_id_2" value="116" />

<input type="text" name="qty[]" id="qty_3" class="qty_input" value="1" />
<input type="hidden" name="cart_id[]" id="cart_id_3" value="117" />

[djones]

wow I'm an idiot. I did not have the <form> tag over all the cart items, only the submit button. Works now. Thanks guys...