stdClass Object into flat array

functions

//bust the objects down to arrays
function objectToArray($result) 
{ 
    $array = array(); 
    foreach ($result as $key=>$value) { 
        if (is_object($value)) { 
            $array[$key]=objectToArray($value); 
        } 
        elseif (is_array($value))  { 
            $array[$key]=objectToArray($value); 
        } 
        else  { 
            $array[$key]=$value; 
        } 
    } 
    return $array; 
}  

// turn an array-of-arrays with a bottom key of 'ID' to a list
function flattenObjectByID($object) 
{ 
    $idlist = array(); 
    foreach ($object as $val) {
        $myid = $val['ID'];  // does this work?
        array_push($idlist, $myid);
    } 
    
    return $idlist; 
}  

// turn an array-of-arrays into an array of the values of the bottom key $bk
function flattenObjectByKey($object, $bk) 
{ 
    $idlist = array(); 
    foreach ($object as $val) {
        $myid = $val[$bk];  // does this work?
        array_push($idlist, $myid);
    }
    return $idlist; 
} 

useage

//$stdObjectwithBottomKeyID might come from a sql statement like
//"SELECT ID FROM wp_posts WHERE post_parent = $post->ID AND post_type='page'"

$array = objectToArray($stdObjectwithBottomKeyID);
$flattenedbyID = flattenObjectByID($array);
$flattenedbyPassedKey = flattenObjectByKey($array, 'ID');

print_r($stdObjectwithBottomKeyID);
print_r($flattenedbyID);
print_r($flattened2);