3v4l.org

run code in 300+ PHP versions simultaneously
<?php //$data = array('Ann' => 1, 'Anna' => 1, 'Tomsdgfdh' => 100, 'Tommy' => 100, 'Dan' => 200, 'Danny' => 200); $data = array('Anna' => 1, 'Ann' => 1, 'Tommy' => 100, 'Tom' => 100, 'Dan' => 200, 'Danny' => 200); ksort($data); $result=array_flip(array_flip($data)); print_r($result);

preferences:
31.52 ms | 406 KiB | 5 Q