<?PHP
/**
 * patTemplate modfifier Number 2 String: N2S
 *
 * $Id$
 *
 * @package     patTemplate
 * @package     Modifiers
 * @author      gERD Schaufelberger <gerd@php-tools.net>
 */

/**
 * patTemplate modfifier Number 2 String: N2S
 *
 * Convert number to string
 *
 * @package     patTemplate
 * @package     Modifiers
 * @author      gERD Schaufelberger <gerd@php-tools.net>
 */
class patTemplate_Modifier_N2s extends patTemplate_Modifier
{
    /**
     * Modify the value
     *
     * Parameter:
     *  - threshold: comma separated list of threshold values from lowest to highest
     *  - string: comma separated list of string values - there must be one more string than thresholds
     *
     * @param	string		value
     * @return	string		modified value
     */
	public function modify($value, $params = array())
	{
        $params =   array_merge(array(
                            'threshold' =>  '1',
                            'string'    =>  'lower,higher'
                    ), $params);

        $threshold  =   array_map('intval', explode(',', $params['threshold']));
        $string     =   explode(',', $params['string']);

        $value  =   intval($value);
        for ($i = count($threshold) - 1; $i >= 0; --$i ) {
            if ($value >= $threshold[$i]) {
                return $string[$i + 1];
            }
        }
        return $string[0];
	}
}