wordpress translate helper

wordpress-tr.php

<?php
/*
 * tr – translation helper
 * examples:
 * tr("Hello") -> "Привіт" // simply translates given string
 * tr("%s products", $category) -> "Продукти категорії " // translates format and uses sprintf for substitutions
 * tr(array("%d comment", "%d comments"), $commentCount) -> "1 comment" // pluralized format version
 */

function tr() {
	$context = 'theme';
	
	$args = func_get_args();
	if (count($args) == 0) throw new ErrorException("Incorrect tr() usage.");
	$phrase = array_shift($args);

	if (is_string($phrase)) {
		$phrase = __($phrase, $context);
	} elseif (is_array($phrase) && count($phrase) == 2 && count($argv) > 0) {
		$phrase = _n($phrase, $context, $args[0]);
	}

	if (count($args) > 0) {
		return call_user_func_array('sprintf', array_merge(array($phrase), $args));
	} else {
		return $phrase;
	}
}