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  1. or download this
    $sth->execute(user) or die $db->errstr;
    
    ...
    $num_rows = $sth->rows;
    
    return (@usr_info, $num_rows);
    
  2. or download this
    print "Rows = ".$num_rows."\n";
    
    ...
    Info = user A
    ... (to 6)
    Info = 1