Description:
------------
It seems that I am not being able to return an array from a function. I read a serialized string, unserialize it and then call a recursive  function to get the deepest keys and values

Reproduce code:
---------------
$test_serial = <<< FO
a:5:{i:0;a:7:{s:8:"question";s:31:"What is your tv watching habits";s:5:"field";s:10:"checkboxes";s:7:"default";N;s:9:"charwidth";N;s:5:"lines";N;s:6:"maxlen";N;s:7:"options";s:54:"never watch tv |always am on the tube |i dont own a tv";}i:1;a:7:{s:8:"question";s:27:"What is your favorite genre";s:5:"field";s:12:"radiobuttons";s:7:"default";N;s:9:"charwidth";N;s:5:"lines";N;s:6:"maxlen";N;s:7:"options";s:19:"horror |sex |comedy";}i:2;a:7:{s:8:"question";s:0:"";s:5:"field";s:9:"textfield";s:7:"default";s:6:"sfasdf";s:9:"charwidth";s:8:"sadfasdf";s:5:"lines";N;s:6:"maxlen";s:7:"asdfasd";s:7:"options";N;}i:3;a:7:{s:8:"question";s:27:"what is your favorite color";s:5:"field";s:9:"textfield";s:7:"default";s:0:"";s:9:"charwidth";s:0:"";s:5:"lines";N;s:6:"maxlen";s:0:"";s:7:"options";N;}i:4;a:7:{s:8:"question";s:14:"favorte things";s:5:"field";s:9:"textfield";s:7:"default";s:0:"";s:9:"charwidth";s:0:"";s:5:"lines";N;s:6:"maxlen";s:0:"";s:7:"options";N;}}
FO;

$test = unserialize($test_serial);

$test_keys = array();

$test_val = array();

function getarr_items($array,$mode){

$newarray = array();

if(is_array($array)){

foreach($array as $key => $val){

if(is_array($val)){

getarr_items($val,$mode);

}

else {

if($mode == "k"){

$newarray[] = $key;

}

else $newarray[] = $val;

}

}

}

return $newarray;

}


$test_keys = getarr_items($test,'k');

$test_val = getarr_items($test,'v');

print_r($test_keys);

echo "<------>";

print_r($test_val);


Expected result:
----------------
should return an array with values

Actual result:
--------------
empty array