core/View/Interface.php


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<?php
/**
 * Piwik - Open source web analytics
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 * @category Piwik
 * @package Piwik
 */

/**
 * Rendering interface for View and Piwik_Visualization
 *
 * @package Piwik
 */
interface Piwik_View_Interface
{
    /**
     * Outputs the data.
     *
     * @return mixed (image, array, html...)
     */
    function render();
}