function phn_request_log($pdo,$clientId,$text,$target,$status,$detail=''){
    try{
        $q=$pdo->prepare('INSERT INTO phn_translation_request_log(client_id,source_text,target_lang,status,detail,created_at) VALUES(?,?,?,?,?,?)');
        $q->execute(array((int)$clientId,(string)$text,(string)$target,(string)$status,substr((string)$detail,0,255),time()));
    }catch(Exception $e){}
}