turn 2d array into 1d PHP
===

I have an array (sample below) containing 3 arrays with very similar content. I was wondering if there was an easy way to put everything into one array, rather than 3 separate ones. Everything I try seems to just overwrite the data and I'm left with the info from the 3rd array only.

    array
      0 => 
        array
          'america' => int 19
          'music' => int 6
          'states' => int 5
          'bank' => int 5
      1 => 
        array
          'america' => int 19
          'home' => int 3
          'society' => int 2
          'writers' => int 2
       2 => 
        array
          'america' => int 19
          'lutheran' => int 4
          'church' => int 4
          'national' => int 4
          'cruises' => int 3

Ideally the end result will look like this:


    array
              'america' => int 19
              'music' => int 6
              'states' => int 5
              'bank' => int 5
              'america' => int 19
              'home' => int 3
              'society' => int 2
              'writers' => int 2
              'america' => int 19
              'lutheran' => int 4
              'church' => int 4
              'national' => int 4
              'cruises' => int 3

Any solutions? thanks