<?PHP/** * patTemplate modfifier Expression * * $Id: Expression.php,v 1.2 2004/11/30 20:46:36 schst Exp $ * * @package		patTemplate * @subpackage	Modifiers * @author		Stephan Schmidt <schst@php.net> *//** * patTemplate modfifier Expression * * Evaluates an expression and returns one of * the defined values for true and false. * * Possible attributes are: * - expression (string) * - true (string) * - false (string) * * @package		patTemplate * @subpackage	Modifiers * @author		Stephan Schmidt <schst@php.net> * @link		http://www.php.net/manual/en/function.wordwrap.php */class patTemplate_Modifier_Expression extends patTemplate_Modifier{   /**	* modify the value	*	* @access	public	* @param	string		value	* @return	string		modified value	*/	function modify( $value, $params = array() )	{		/*		 * true and false		 */		if( !isset( $params['true'] ) )			$params['true']	=	'true';		if( !isset( $params['false'] ) )			$params['false']=	'false';        /*         * replace the value in the expression         */        $params['expression'] = str_replace( '$self', "'$value'", $params['expression'] );        @eval( '$result = '.$params['expression'].';' );                if ($result === true) {            return str_replace( '$self', $value, $params['true'] );        }        return str_replace( '$self', $value, $params['false'] );	}}?>