private function recursiveApplyTransformationToArray(array $input, Transformation $transformation)
{
$result = [];
$attributes = isset($input['@attributes']) ? $input['@attributes'] : [];
// Strip out the attributes.
unset($input['@attributes']);
// Run the input against the transformation test. If it passes, run
// the actual transformation
if ($transformation->test($input, $attributes) === true) {
$input = $transformation->action($input, $attributes);
}
// Are we dealing with an associative array, or a sequential indexed array
$isAssoc = array_is_assoc($input);
// Iterate over each element in the array and decide if we need to move deeper
foreach ($input as $key => $value) {
$next = is_array($value) ? $this->recursiveApplyTransformationToArray($value, $transformation) : $value;
// Preserve array indexes
$isAssoc ? $result[$key] = $next : array_push($result, $value);
}
return $result;
}
