[php] simple array out of multidim. array

[Theo_Nabuurs]

Hi all,

I've been puzzling for two days on this problem and all that's related to it and despite the wealth of similar examples I just can not manage to find a satisfactory solution to my problem.

Situation: I have a not overly complicated multidimensional array:

[$array] => array
   (
       [0] => array
            (
         [key1] =>63
         [key2] =>19
         [key3] =>text
         [key4] =>19/28/122
         [...........
            )
      [1] => array
            (
         [key1] =>34
         [key2] =>19
         [key3] =>text
         [key4] =>19/28/122
         [...........
            )
      [2] => array
         [key1] =>31
         [key2] =>19
         [key3] =>text
         [key4] =>19/28/122
         [...........
            )
      [3] => array
           (
         [key1] => 38
         [...........

Which is bigger in real life but this suffices to explain.
I have a piece of php code that processes a simple, one-dimensional array value by value on a 'foreach' basis. This simple array consists of the key1 values of all $array[]['key1'] rows in the multidimensional array above. This array could be simulated in this case by: $array = array (63,34,31,38,.......)
And that is all I need! Extraction of the key1 values into an array so I can process them through a 'foreach' loop.

I have tried all 'foreach' and 'list' functions and combinations of them, I just can't get past displaying all of the subarray in my output, meaning all keys per subarray instead of only the key1 values in an array.

I really need a push in the right direction...

Thanks in advance!

[Installer]

foreach ($array as $subarray) {
    $key1_array[] = $subarray['key1'];
}

[Theo_Nabuurs]

That did the trick,

Thanks!