Name generator based on markov process

index.php

<?php
function generateMarkovTable($names = [])
{
    $table = [];
    foreach ($names as $name) {
        $letters = str_split($name);
        foreach ($letters as $key => $letter) {
            $letter = strtolower($letter);

            if (!array_key_exists($key + 1, $letters)) {
                continue;
            }

            $nextLetter = strtolower($letters[$key + 1]);

            if (!(array_key_exists($letter, $table) && array_key_exists($nextLetter, $table[$letter]))) {
                $table[$letter][$nextLetter] = 1;
                continue;
            }

            $table[$letter][$nextLetter] = $table[$letter][$nextLetter] + 1;
        }
    }
    return $table;
}

function generateMarkovName($table, $minLength = 3, $maxLength = 10)
{
    $currentLetter = array_rand($table);
    $text = [$currentLetter];
    $length = mt_rand($minLength, $maxLength);

    for ($i = 0; $i < $length; $i++) {

        $nextLetter = getRandomWeightedElement($currentLetter, $table);
        if (count($text) > 1) {
            $previousLetter = $text[$i - 1];

            while ($previousLetter == $nextLetter) {
                $nextLetter = getRandomWeightedElement($currentLetter, $table);
            }
        }

        $text[] = $nextLetter;
        $currentLetter = $nextLetter;
    }

    return ucfirst(implode('', $text));
}

function getRandomWeightedElement($key, array $table)
{
    if (array_key_exists($key, $table)) {
        $weightedValues = $table[$key];

        $rand = mt_rand(1, (int) array_sum($weightedValues));

        foreach ($weightedValues as $key => $value) {
            $rand -= $value;
            if ($rand <= 0) {
                return $key;
            }
        }
    }

    return array_rand($table);
}

$names = [
    'vagrant',
    'docker',
    'database',
    'node',
    'javascript',
    'google',
    'bandwidth',
    'cache',
    'cookies',
    'delete',
    'spam',
    'user',
    'thread',
    'scaleable',
    'robot',
    'radar',
    'multitask',
    'legacy',
    'tech',
    'solution',
    'pixel',
    'cloud',
    'chrome',
    'fire',
    'Internet',
    'Advanced',
    'Augmented',
    'virtual',
    'Development',
    'agile',
    'opensource'
];

$table = generateMarkovTable($names);

echo PHP_EOL;
echo PHP_EOL;

for ($i=0; $i < 49; $i++) {
    echo str_pad(generateMarkovName($table, 4, 7), 12) . '|' . '        ';

    if (!($i%8)) {
        echo PHP_EOL;
    }
}

echo PHP_EOL;
echo PHP_EOL;