代码：
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sub upmemberdate {
my $membernametemp = shift;
my %userinfo = @_;

my $filetoopen = "$lbdir$memdir/$membernametemp.cgi";
if (-e $filetoopen) {
open (FILE,$filetoopen);
my $filedata=<FILE>;
close(FILE);
chomp $filedata;
local ( $membername, $password, $membertitle, $membercode, $numberofposts, $emailaddress, $showemail, $ipaddress, $homepage, $oicqnumber, $icqnumber, $location, $interests, $joineddate, $lastpostdate, $signature, $timedifference, $privateforums, $useravatar, $userflag, $userxz, $usersx, $personalavatar, $personalwidth, $personalheight, $rating, $lastgone, $visitno, $addjy, $meili, $mymoney, $postdel, $sex, $education, $marry, $work, $born, $chatlevel, $chattime, $jhmp, $useradd3, $useradd4, $onlinetime, $userquestion, $useradd6, $useradd7, $useradd8) = split(/\t/,$filedata);
local($numberofposts,$numofreplys)=split(/\|/,$numberofposts);
foreach my $info (keys %userinfo) {
if ($userinfo{$info}=~/^[\+\-][0-9]+$/) {
$$info += $userinfo{$info};
}
else {
$userinfo{$info} =~ s/^\\(\-|\+)/$1/;
$userinfo{$info} =~ s/^\\\\/\\/;
$$info = $userinfo{$info};
}
#print "$info $$info\n";
}
open(FILE,">$filetoopen");
print FILE "$membername\t$password\t$membertitle\t$membercode\t$numberofposts\|$numberofreplys\t$emailaddress\t$showemail\t$ipaddress\t$homepage\t$oicqnumber\t$icqnumber\t$location\t$interests\t$joineddate\t$lastpostdate\t$signature\t$timedifference\t$privateforums\t$useravatar\t$userflag\t$userxz\t$usersx\t$personalavatar\t$personalwidth\t$personalheight\t$rating\t$lastgone\t$visitno\t$addjy\t$meili\t$mymoney\t$postdel\t$sex\t$education\t$marry\t$work\t$born\t$chatlevel\t$chattime\t$jhmp\t$useradd3\t$useradd4\t$onlinetime\t$userquestion\t$useradd6\t$useradd7\t$useradd8\t\n";
close(FILE);
}
}

所传递的参数，第一个是所要写入的用户名，后面是一个哈希表，哈希表的关键字是要被改变的变量名，值是增减的值或被改为的值。
如果哈希表的值以 + - 开头，则是对相应的用户数据增减，否则就将相应的用户数据设为哈希表的值。
如果要将一个以 + - 开头的字串付给一个变量的话，就要用 \ 对其进行一次转义，如果以 \ 开头还要进行一次转义。
例如，将用户 test 的发贴数加1 ，威望设为 -6 ，可以这样调用过程。
&upmemberdate('test',numofposts,'+1',rating,'\-6');