Controllers\xAPI\DocumentController::checkTypes PHP Method

    public function checkTypes($name, $value, $expected_types)
    {
        // Convert expected type string into array
        $expected_types = is_string($expected_types) ? [$expected_types] : $expected_types;
        $validators = array_map(function ($expectedType) use($name, $value) {
            $validator = new \app\locker\statements\xAPIValidation();
            $validator->checkTypes($name, $value, $expectedType, 'params');
            return $this->jsonParam($expectedType, $value);
        }, $expected_types);
        $passes = array_filter($validators, function (\app\locker\statements\xAPIValidation $validator) {
            return $validator->getStatus() === 'passed';
        });
        if (count($passes) < 1) {
            \App::abort(400, sprintf("`%s` is not a %s", $name, implode(',', $expected_types)));
        }
        return $value;
    }