 <?php

error_reporting(-1);

$letters    = array(
    1 => 'да',
    2 => 'мо',
    3 => 'к',
    4 => 'ва',
    5 => 'лю',
    6 => 'го',
    7 => 'о',
    8 => 'ла',
    9 => 'му',
    10 => 'же',
    11 => 'тк',
    12 => 'тс',
    13 => 'г'
);
$lastLetter = array(
    1 => 'ий',
    2 => 'ов',
    3 => 'ко',
    4 => 'уй',
    5 => 'ин',
    6 => 'ан'
);


for ($i = 1; $i <= 3; $i++) {
    $random        = mt_rand(1, count($letters));
    $randomLetters = $letters[$random];
    $name          = $name . $randomLetters;
}
$randomLast = mt_rand(1, count($lastLetter));
$Letter     = $lastLetter[$randomLast];
$name       = ucfirst($name) . $Letter;
echo "$name \n";
?>