multi-dimensional array from forminput - php

Question

I think my solution is in a multi-dimensional array, but how...
If i have the following (or similar) in a HTML form (simplified for example)
<select name="Postage[]" id="Unique-ID">
<option value="1">Postage Option 1</option>
<option value="2">Postage Option 2</option>
<option value="3">Postage Option 3</option>
</select>
<input name="PostagePrice[]" id="Price-Unique-ID" value="" />
<select name="Postage[]" id="Unique-ID">
<option value="1">Other Postage Option 1</option>
<option value="2">Other Postage Option 2</option>
<option value="3">Other Postage Option 3</option>
</select>
<input name="PostagePrice[]" id="Price-Unique-ID" value="" />
<select name="Postage[]" id="Unique-ID">
<option value="1">Another Postage Option 1</option>
<option value="2">Another Postage Option 2</option>
<option value="3">Another Postage Option 3</option>
</select>
<input name="PostagePrice[]" id="Price-Unique-ID" value="" />
How do i get this stored into a PHP array (so i can later add it to my DB)
So far i have the below, but it is clearly not finnished
if (isset($_POST['Postage'])) {
if (is_array($_POST['Postage'])) {
foreach($_POST['Postage'] as $PostateID=>$PostageOption){
// this is where i am tottally stuck
// need to assosiate postageID with a Postage Option and a PostagePrice
}
}
}
Im sorry to sound dumb but i have not yet had the "Erika" moment with multi-dimensional array's
I would be grateful for any advice

Answer 1

$_POST['Postage'] is not a multidimensional array. You can easily see it if you var_dump($_POST['Postage']); It's just an array of all the selected indexes in your selects:
array(3) {
[0]=>
string(1) "1"
[1]=>
string(3) "1"
[2]=>
string(3) "1"
}
Here is what I input for testing:
And here I get the postages and associated prices, using a for loop:
<?php
$n = count($_POST['Postage']);
for ($i = 0; $i < $n; ++$i)
{
print $_POST['Postage'][$i] . " " . $_POST['PostagePrice'][$i] . "<br>";
}
prints:
1 1
2 2
2 3

Answer 2

Consider your array of inputs as below:
<?
//Let your inputs be Postage1, Price1, Postage2, Price2...
//Then your Received POST will be..
$_POST = Array(
"Postage" => Array( 0 => 'Postage1', 1 => 'Postage2', 2 => 'Postage3'),
"PostagePrice"=> Array( 0 => 'Price1', 2 => 'Price2', 3 => 'Price3')
);
//Now, you can see that index 0 points to a price of POSTAGE and so on 1 and 2..
//Store corresponding values in an Array.
$store = Array();
foreach($_POST['Postage'] as $PostateID=>$PostageOption){
$store[$PostageOption] = $_POST['PostagePrice'][$PostateID];
}
print_r($store);
?>

Answer 3

<?PHP
$final = array_combine($_POST['Postage'], $_POST['PostagePrice']);
?>
By this way, you will associate Postage and PostagePrice in this array.