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public static function brDate2ISO($date){
    if(isset($date) && !is_null($date) && '' != $date && 10 == strlen($date)){
        $dtAux = substr($date, 6, 4).'-';
        $dtAux .= substr($date, 3, 2).'-';
        $dtAux .= substr($date, 0, 2);

        $date = $dtAux;
    }
    return $date;
}