Map associative element of a multidimensional array to form a flat associative array

Question

I am having no success using array_combine(). Can anyone help me to produce a flat associative array from the data in my two rows?

array
  0 => 
    array
      0 => 
        array
          'traitvalue01' => string 'width'
          'traitvalue02' => string 'Length'
          'traitvalue03' => string 'Top'
          'traitvalue04' => string 'Bottom'
  1 => 
    array
      0 => 
        array
          'trait01' => string '7 in'
          'trait02' => string '25 in'
          'trait03' => string '3 in'
          'trait04' => string '3 in'

Expected result:

array (
    'width'  => '7 in',
    'Length' => '25 in',
    'Top'    => '3 in',
    'Bottom' => '3 in',
)

Answer 1

Here is my solution:

<?php

$a = array(
        array(
            array(
                'traitvalue01' => 'width',
                'traitvalue02' => 'Length',
                'traitvalue03' => 'Top',
                'traitvalue04' => 'Bottom'
            )
        ),
        array(
            array(
              'trait01' => '7 in',
              'trait02' => '25 in',
              'trait03' => '3 in',
              'trait04' => '3 in'
            )
        )
    );

print_r(array_combine($a[0][0], $a[1][0]));

?>

And this is the output:

Array
(
    [width] => 7 in
    [Length] => 25 in
    [Top] => 3 in
    [Bottom] => 3 in
)