php recursive key renaming for inner arrays only

Question

i am in need of bit direction here for renaming my inner child keys who inner depth is unknown. Original array is parent child multidimensional array created via id and parent_id relation. Here's a one example of array

$testArray = array (
 "name" => "Test name",
 "someValue1" => 834.69,
 "someMoreValue" => 33.4,
 "someCode" => 6668,
 "child" => array
 (
 array
 (
 "name" => "Some name",
 "someValue1" => 471.05,
 "someMoreValue" => 18.84,
 "someCode" => 7064,
 "child" => array
 (
 array
 (
 "name" => "Yet another name",
 "someValue1" => 438.62,
 "someMoreValue" => 17.56,
 "someCode" => 7065
 ),
 array
 (
 "name" => "Da name",
 "someValue1" => 4444,
 "someMoreValue" => 44,
 "someCode" => 7044
 )
 )
 ),
 array
 (
 "name" => "name",
 "someValue1" => 2222,
 "someMoreValue" => 22,
 "someCode" => 7022
 )
 )
);

here's my trying so far, i am able to rename the first level of childs only.

function keyprefix($keyprefix, $keyprefix2, Array $array) {
 foreach($array as $k=>$v){
 $array[$keyprefix.'-'.$k.'-'.$keyprefix2] = $v;
 unset($array[$k]);
 }
 return $array; 
}
function test($array) {
 $newArr = array();
 foreach ($array as $key => $value) {
 // $newArr[] = is_array($value) ? test($value) : $value;
 // $newArr[] = is_array($value) ? $array : array_merge( keyprefix("$name","Alt Danışman", $array[$key]) );
 $index = 0;
 $name = $array['name'];
 if (is_array($value)) {
 //if (is_array($value)) {
 // test($value);
 //}
 $newArr[$key] = array_merge(
 keyprefix("$name","Under Child", $array[$key])
 );
 } 
 else {
 $newArr[$key] = $value;
 }
 }
 return $newArr;
}
echo highlight_string(var_export(test($testArray), true));

enter image description here

Any ideas on how I can approach this? I feel that I am close just need a little guide in the right path. I have seen many examples of stack-overflow etc but need some help. I know recursion is not my best skill yet.

• Nick: What do you want to rename them too? Something based on the depth, or the parent name, or ???
• Danish: hey @Nick i added pic of my code, as you can see i renamed them based on there respective parent name followed by some text. the keyprefix is actually renaming all keys of provided array
• shingo: Rename array with key child only or rename every inner array?
• Danish: Only key name child have inner arrays @shingo

Answer 1

function TryRenameChildren(array $array)
{
 if(isset($array['child']))
 {
 $array['child'] = keyprefix($array['name'], 'prefix2', $array['child']);
 foreach($array['child'] as $key => $value)
 if(is_array($value))
 $array['child'][$key] = TryRenameChildren($value);
 }
 return $array;
}
$testArray = TryRenameChildren($testArray);

• Danish: daymm! thank you @shingo i don't get it, when i will be able to understand recursion in depth. sometimes i just suck :(