Generate unique names

key_generator

<?php
class KeyGenerator
{

    public static function fromLabels(array $labels)
    {
        if (empty($labels)) {
            return [];
        }

        $labelsFormatted = array_map(function ($label) {
            return Inflector::underscore(Inflector::camelize($label));
        }, $labels);

        $labelsCount = array_count_values($labelsFormatted);

        $reverse = array_map(function ($label) use (&$labelsCount) {

            $labelsCount[$label] = $labelsCount[$label] - 1;

            $currentLabelCount = $labelsCount[$label];

            if (0 == $currentLabelCount) {
                return $label;
            }

            return $label . '_' . $currentLabelCount;
        }, array_reverse($labelsFormatted, true));

        return array_reverse($reverse);
    }

}