<?php

function substrwords($str, $n)
{
    $len = strlen($str);
    if ($len > $n) {
        preg_match('/^.{1,260}\b/s', $str, $matches);
        return rtrim($matches[0]) ;
    }
    else {
        return $str;
    }
}

function format_price($amount, $currency, $mantisa = 0)
{
    if (null === $amount)
    {
        return null;
    }
    
    $currency = (string) $currency;

    $strm = '';
    if($mantisa > 0)
    {
        $strm = '.'.str_repeat('0', $mantisa);
    }
    
    switch($currency)
    {
        case 'CZK':
            $pattern = '#,##0'.$strm.' ¤';
            break;
        default:
            $pattern = '#,##0.00 ¤';
            break;
    }
    
    $numberFormat = new sfNumberFormat(sfContext::getInstance()->getUser()->getCulture());
    
    return $numberFormat->format($amount, $pattern, $currency);
}