In case someone needs this here is the solution:
no cake used:
/*
* Usage $data (array to be transformed), $result = null- to hold the
result
* transform($data, $result);
*/
function transform($input, &$output, $key_path = array()) {
foreach ($input as $key => $value) {
if(is_array($value)) {
$key_path[] = $key;
transform($input[$key], &$output, $key_path);
array_pop($key_path);
} else {
$path = implode(".", $key_path);
$output[$path.".".$key] = $value;
}
}
}
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