wiki.techinc.nl/languages/classes/LanguageCs.php

<?php

/** Czech (čeština [subst.], český [adj.], česky [adv.])
 *
 * @ingroup Language
 */
class LanguageCs extends Language {

	/**
	 * Plural transformations
	 * Invoked by putting
	 * {{plural:count|form1|form2-4|form0,5+}} for two forms plurals
	 * {{plural:count|form1|form0,2+}} for single form plurals
	 * in a message
	 * @param $count int
	 * @param $forms array
	 * @return string
	 */
	function convertPlural( $count, $forms ) {
		if ( !count( $forms ) ) { return ''; }
		$forms = $this->preConvertPlural( $forms, 3 );

		switch ( $count ) {
			case 1:
				return $forms[0];
			case 2:
			case 3:
			case 4:
				return $forms[1];
			default:
				return $forms[2];
		}
	}
}