<?php
 
$arr = [
  'test1' => [
    'testing 1-1' => ['testing 1-1-1', 'testing 1-1-2', 'testing 1-1-3'],
    'testing 1-2' => ['testing 1-2-1', 'testing 1-2-2', 'testing 1-2-3'],
    'testing 1-3' => ['testing 1-3-1', 'testing 1-3-2', 'testing 1-3-3']],
  'test2' => [
    'testing 2-1' => ['testing 2-1-1', 'testing 2-1-2', 'testing 2-1-3'],
    'testing 2-2' => ['testing 2-2-1', 'testing 2-2-2', 'testing 2-2-3'],
    'testing 2-3' => ['testing 2-3-1', 'testing 2-3-2', 'testing 2-3-3']],
  'test3' => [
    'testing 3-1' => ['testing 3-1-1', 'testing 3-1-2', 'testing 3-1-3'],
    'testing 3-2' => ['testing 3-2-1', 'testing 3-2-2', 'testing 3-2-3'],
    'testing 3-3' => ['testing 3-3-1', 'testing 3-3-2', 'testing 3-3-3']]];
 
function IterateArray($data) {
	if(is_array($data)) {
		foreach ($data as $data_key => $data_value) {
			print("\n\n");
			print($data_key . ' :: ');
			print(IterateArray($data_value));
		}
	} else {
		print($data);
		print("\n");
	}
}
 
IterateArray($arr);
 
?>

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