Accessing PHP array passed through $_POST

Question

I passed 2 arrays through $_POST and am trying to use the data in a php function. I am able to loop through each of the arrays using a foreach loop.

However, I need to loop through one of these arrays while accessing the other one in tandem (ie, on the first element in array1, I need to access the first element of array2)--so a nested foreach loop obviously doesn't help.

I have found that I cannot access the values by numerical index, however--except the first value of the array.

Any help would be greatly appreciated.

Here is the current snippet:

$count = 1;
    foreach ($quantityArray as $quantity):  
        if($quantity < 1){
        ... 
        $order_to_item_idArray[$count]…..
        }
        if($quantity > 0){
        ...             
        $order_to_item_idArray[$count]…...
        }
        ...
    $count = $count + 1;
endforeach;

You could use a simple for loop?

ooo
– ooo

2014-11-04 22:29:43 +00:00
Commented Nov 4, 2014 at 22:29 — ooo
– ooo, Commented Nov 4, 2014 at 22:29

baao · Accepted Answer · 2014-11-04 22:36:06Z

1

You will want to use something like this to achieve what you want:

$a as $key => $c

Here (as pseudo code):

$a = array('dsa','das','asf');
$b = array('aaa','eee','ggg');

foreach ($a as $key => $c)
{
    echo $c . " - " .$b[$key];
}

For your code, the line would be:

foreach ($quantityArray as $key => $quantity)

edited Nov 4, 2014 at 22:36

answered Nov 4, 2014 at 22:28

baao

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2 Comments

Jo.P Over a year ago

Great--thanks! Why does this work, but not accessing by index, numerically?

baao Over a year ago

Well, it does work with the index, but in your code you are writing $count = 1, but it should be $count = 0 because arrays start with 0, not 1. And you should use $count++ instead of $count = $count + 1. Though I would consider using the $count way bad practice as the one in my answer is way easier and error proof.

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