gistfile1.txt

#!/usr/bin/php
<?php

function genChildName($min = 4, $max = 11, $consonants = 'aoiue', $noncons = 'qwrtpsdfghjklzxcvwnmy')
{
    $len = rand($min, $max);

    $name = '';

    for ($i = 0; $i < $len; $i++) {
        if ($i % 2 == 0) {
            $name .= $noncons[rand(0, strlen($noncons) - 1)];
        } else {
            $name .= $consonants[rand(0, strlen($consonants) - 1)];
        }
    }

    return $name;
}

echo genChildName() . "\n";