Форматирование цены, установка валюты

price_format.php

<?php
//[[price_format? &value=`[+price+]` &currency=`[+currency+]`]]

$value = isset($value) ? $value : '';
$currency = isset($currency) ? $currency : '';

if ($currency) {
	switch ($currency) {
		case USD:
			$currency = '$';
			break;
		case EUR:
			$currency = '€';
			break;		
		case BYR:
			$currency = 'руб.';
			break;
	}
}

if ($value) {
	$value = str_replace (' ', '', $value);
	$value = preg_replace('/[^0-9]/', '', $value);
	$value = number_format($value, 0, '', ' ');
}

return $currency . ' ' . $value;