How to “flatten” a multi-dimensional array to simple one in PHP? [duplicate]

$array  = your array

$result = call_user_func_array('array_merge', $array);

echo "<pre>";
print_r($result);

REF: http://php.net/manual/en/function.call-user-func-array.php

Here is another solution (works with multi-dimensional array) :

function array_flatten($array) {

   $return = array();
   foreach ($array as $key => $value) {
       if (is_array($value)){ $return = array_merge($return, array_flatten($value));}
       else {$return[$key] = $value;}
   }
   return $return;

}

$array  = Your array

$result = array_flatten($array);

echo "<pre>";
print_r($result);