<?php 
$tartib = array("Toskent", "Xorazm", "Nukus", "Andijon","Navoyi","Samarqand","Namangan","Qashqadaryo","Surxondaryo","Buxoro","Sirdaryo","Jizzax","Fargʻona");
sort($tartib);
foreach ($tartib as $key => $val) {
    echo "" . $key . ". " . $val . "<br>";
}
?>