PHP script for random 6 lottary numbers from 1 to 49

lotto.php

<?php
//script for random 6 lottary numbers from 1 to 49.

$lottoarray = array();
 for($i=1;$i<=6;$i++){
    do{
        $random = random_int(1, 49);
    }while (in_array($random, $lottoarray));
    $lottoarray[] = $random;
}
for($j=0;$j<6;$j++){
    $val=$lottoarray[$j];
    echo '<h1>',$j+1,' Number -  ',$val,'</h1>';
}
?>