Inflect plural and singular of nouns in German Language.
PHP port of pluralize and singularize part from the NLP library https://github.com/clips/pattern/blob/master/pattern/text/de/inflect.py
See example.php
require_once('GermanNumerus.php');
use \ulrischa\GermanNumerus;
echo GermanNumerus::pluralize("Kopf");
echo GermanNumerus::singularize("Bodenverunreinigungen");
ca. 72% for pluralize() ca. 84% for singularize()