Simplify a nested array into a single level array [duplicate]

Answer 1

how about some recursion

$result = array();
function walkthrough($arr){ 
$keys = array_keys($arr);
array_push($result, $keys);
foreach ($keys as $key)
{
    if (is_array($arr[$key]))
       walkthrough($arr[$key]);
    else
       array_push($result,$arr[$key]);
}
return $result;
}

walkthrouth($your_arr);

P.S.:Code can be bugged, but you've got an idea :)