<?php $myArray = array( 'Europe' => 'World', 'Asia' => 'World', 'Africa' => 'World', 'France' => 'Europe', 'Poland' => 'Europe', 'Germany' => 'Europe', 'Paris' => 'France', 'Lille' => 'France', 'Warsaw' => 'Poland', 'Szczecin' => 'Poland', 'Berlin' => 'Germany', 'Gumience' => 'Szczecin' ); foreach($myArray as $key => $val) { $element = build($key, $myArray); if ($element) { $result[$element][$key] = $value; } else { $result[][$value] = array(); } } function build($needle, $haystack) { foreach($haystack as $key => $value) { if ($needle === $key OR (is_array($value) && build($needle, $value) !== false)) { return $value; } } return false; } function print_r2($val){ echo '<pre>'; print_r($val); echo '</pre>'; } print_r2($myArray); echo ('<br /><br />'); print_r2($result); ?>
You have javascript disabled. You will not be able to edit any code.