PMA\libraries\Index::isUnique PHP Method

    public function isUnique($as_text = false)
    {
        if ($as_text) {
            $r = array('0' => __('Yes'), '1' => __('No'));
        } else {
            $r = array('0' => true, '1' => false);
        }
        return $r[$this->_non_unique];
    }