This is the API documentation for concrete5 version 5.6 and earlier. View Current API Documentation
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<?php defined('C5_EXECUTE') or die('Access Denied.');

class Concrete5_Helper_Ajax {

    /** Sends a result to the client and ends the execution.
    * @param mixed $result
    */
    public function sendResult($result) {
        if(@ob_get_length()) {
            @ob_end_clean();
        }
        header('Content-Type: application/json; charset=' . APP_CHARSET, true);
        echo Loader::helper('json')->encode($result);
        die();
    }
    
    /** Sends an error to the client and ends the execution.
    * @param string|Exception $result The error to send to the client.
    */
    public function sendError($error) {
        if(@ob_get_length()) {
            @ob_end_clean();
        }
        if ($error instanceof ValidationErrorHelper) {
            $error->outputJSON();
        } else {
            header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request', true, 400);
            header('Content-Type: text/plain; charset=' . APP_CHARSET, true);
            echo ($error instanceof Exception) ? $error->getMessage() : $error;
        }
        die();
    }

}