<?php
/**
 * patTemplate-function required list of vars
 *
 * $Id$
 *
 * @package Wombat
 * @subpackage patTemplate
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

/**
 * patTemplate-function required list of vars
 *
 * Show content if list of vars is filled
 *  
 * @version 0.2.0
 * @package Wombat
 * @subpackage patTemplate
 */
class patTemplate_Function_Require extends patTemplate_Function
{
    /**
     * name of the function
     * @access   private
     * @var      string
     */
    public $_name  =   'Require';

    /**
     * tell that this function has to be executed during runtime
     * @var string
     */
    public $_type = PATTEMPLATE_FUNCTION_RUNTIME;

    /**
     * call the function
     *
     * Check all parameters with name prefix "any_". If they are all empty, no content
     * will be shown. 
     *
     * @access public
     * @param array $params parameters of the function (= attributes of the tag)
     * @param string $content inside tag
     * @return string content to insert into the template
     */
    public function call($params, $content)
    {
        // any
        foreach ($params as $k => $value) {
            if (0 != strncmp($k, 'any_', 4)) {
                continue;
            }

            if (!empty($value)) {
                return $content;
            }
        }
        return '';
    }    
}