请教，怎样限制用户名只能用英文和数字?不可用中文?
源码如下:
程序代码：<?php
require_once(dirname(__FILE__)."/config.php");
if(empty($_POST) && empty($_GET))
{
ShowMsg("本页面禁止返回!","control.php");
exit();
}
if(empty($fmdo)) $fmdo = "";
if(empty($dopost)) $dopost = "";
switch($fmdo){
/*********************
function A_User()
*******************/
case "user":
/*
检查用户名是否存在
function ACheckUser();
*/
if($dopost=="checkuser")
{
AjaxHead();
$msg = "";
$userid = trim($userid);
if($userid==""||!TestStringSafe($userid)){
$msg = "<font color='red'> 用户名含有非法字符！ </font>";
}else{
$dsql = new DedeSql(false);
$dsql->SetQuery("Select ID From #@__member where userid='$userid'");
$dsql->Execute();
$rowcount = $dsql->GetTotalRow();
$dsql->Close();
if($rowcount>0){ $msg = "用户名 [<font color='red'>$userid</font>]，已经被人使用，请使用其它用户名。"; }
else{ $msg = "用户名 [<font color='red'>$userid</font>]，可以正常使用。"; }
}
echo $msg;
exit();
}
/*
新用户注册
function AUserReg()
*/
else if($dopost=="regnew")
{
if($cfg_pp_isopen==1 && $cfg_pp_regurl!=''){
header("Location:{$cfg_pp_regurl}");
exit();
}
require_once(dirname(__FILE__)."/reg_new.php");
exit();
}
else if($dopost=="regok")
{
if($cfg_pp_isopen==1 && $cfg_pp_regurl!=''){
header("Location:{$cfg_pp_regurl}");
exit();
}
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
$userid = trim($userid);
$pwd = trim($userpwd);
$pwdc = trim($userpwdok);
if(!TestStringSafe($userid)||!TestStringSafe($pwd))
{
ShowMsg("你的用户名或密码不合法！","-1");
exit();
}
if(strlen($userid)<3||strlen($pwd)<3){
ShowMsg("你的用户名或密码小于三位，不允许注册！","-1");
exit();
}
if(strlen($userid)>24||strlen($pwd)>24){
ShowMsg("你的用户名或密码长度不能超过24位！","-1");
exit();
}
if($pwdc!=$pwd){
ShowMsg("你两次输入的密码不一致！","-1");
exit();
}
$dsql = new DedeSql(false);
//会员的默认金币
$dfrank = $dsql->GetOne("Select money From #@__arcrank where rank='10' ");
if(is_array($dfrank)) $dfmoney = $dfrank['money'];
else $dfmoney = 0;
$dsql->SetQuery("Select ID From #@__member where userid='$userid'");
$dsql->Execute();
$rowcount = $dsql->GetTotalRow();
if($rowcount>0){
$dsql->Close();
ShowMsg("你指定的用户名已存在，请使用别的用户名！","-1");
exit();
}
$uname = eregi_replace("['\"\$ \r\n\t;<>\*%\?]", '', $uname);
$pwd = GetEncodePwd($pwd);
$jointime = time();
$logintime = time();
$joinip = GetIP();
$loginip = GetIP();
//设置可选注册项目的默认值
$dfregs['birthday_y'] = '0000';
$dfregs['birthday_m'] = '00';
$dfregs['birthday_d'] = '00';
$dfregs['birthday'] = '0000-00-00';
$dfregs['weight'] = '0';
$dfregs['height'] = '0';
$dfregs['job'] = '';
$dfregs['province'] = '0';
$dfregs['city'] = '0';
$dfregs['myinfo'] = '';
$dfregs['tel'] = '';
$dfregs['type'] = 0;
$dfregs['oicq'] = '';
$dfregs['homepage'] = '';
$dfregs['address'] = '';
$dfregs['spacename'] = '';
$dfregs['showaddr'] = '0';
foreach($dfregs as $k=>$v){
if(!isset($$k)) $$k = $v;
}
$membertype = 10;
if($cfg_member_regsta == 'Y'){
$membertype = 0;
}
if($type == 1){
if(trim($comname) == ''){
ShowMsg("公司用户必须填写公司名称","-1");
exit();
}
$comname = htmlEncode(trim($comname));
}else{
$type = 0;
}
if(empty($spacename) && !empty($comname)) $spacename = $comname;
if(empty($spacename)) $spacename = $uname.'的个人空间';
$birthday = GetAlabNum($birthday_y)."-".GetAlabNum($birthday_m)."-".GetAlabNum($birthday_d);
if($birthday=='0-0-0'){
$birthday = '0000-00-00';
}
$height = GetAlabNum($height);
$inQuery = "
INSERT INTO `#@__member` (`userid` , `pwd` , `type` , `uname` ,`sex` , `membertype` , `uptime` , `exptime` ,
`money` , `email` , `jointime` , `joinip` , `logintime` , `loginip` ,
`c1` , `c2` , `c3` , `matt` , `guestbook` , `spaceshow` , `pageshow` , `spacestyle` ,
`spacename` , `spaceimage` , `news` ,`mybb` , `listnum` , `scores` )
VALUES ('$userid', '$pwd', '$type', '$uname','$sex', '$membertype', '0', '0',
'0', '$email', '$jointime', '$joinip', '$jointime', '$joinip',
'0', '0', '0', '0', '0', '0', '0', '',
'$spacename', '', '', '', '20', '{$cfg_df_score}')
";
if($dsql->ExecuteNoneQuery($inQuery))
{
$id = $dsql->GetLastID();
if($type == 1)
{
$inQuery = "INSERT INTO #@__member_cominfo(id, comname) VALUES ('$id', '$comname');";
$dsql->ExecuteNoneQuery($inQuery);
}
else
{
$inQuery = "
INSERT INTO `#@__member_perinfo` (`id`, `uname` , `sex` , `birthday` , `weight` ,`height` , `job` , `province` , `city` , `myinfo` ,
`tel` , `oicq` , `homepage` , `showaddr` ,`address` , `fullinfo`)
VALUES ('$id','$uname', '$sex', '$birthday', '$weight','$height', '$job', '$province', '$city', '$myinfo' ,
'$tel' , '$oicq' , '$homepage' ,'$showaddr','$address','');";
$dsql->ExecuteNoneQuery($inQuery);
}
$dsql->Close();
$ml = new MemberLogin();
$rs = $ml->CheckUser($userid,$pwd);
if($rs==1)
{
if($type == 1){
ShowMsg("注册成功，请您立即填写企业相关资料","mycominfo.php",0,2000);
exit();
}
ShowMsg("注册成功，5秒钟后转向空间管理中心","control.php",0,2000);
exit();
}else
{
ShowMsg("注册成功，5秒钟后转向登录页面...","login.php",0,2000);
exit();
}
}else
{
echo $dsql->GetError();
$dsql->Close();
ShowMsg("注册失败，请检查资料是否有误或与管理员联系！","javascript:;");
exit();
}
}
/*
更改用户资料
function AEditUser()
*/
else if($dopost=="editUserSafe")
{
if($cfg_pp_isopen==1 && $cfg_pp_editsafeurl!=''){
header("Location:{$cfg_pp_editsafeurl}");
exit();
}
CheckRank(0,0);
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
if($oldpwd==""){
ShowMsg("你没有填写你的旧密码！","-1");
exit();
}
$pwd = trim($userpwd);
$pwdc = trim($userpwdok);
if($pwd!=""){
if(strlen($pwd)>24){
ShowMsg("密码长度不能超过24位！","-1");
exit();
}
if(!TestStringSafe($pwd)){
ShowMsg("你的新密码含有非法字符！","-1");
exit();
}
if($pwdc!=$pwd){
ShowMsg("你两次输入的密码不一致！","-1");
exit();
}
}else{
ShowMsg("你没有设置要更改的密码！","-1");
exit();
}
$dsql = new DedeSql(false);
$row = $dsql->GetOne("Select pwd From #@__member where ID='".$cfg_ml->M_ID."'");
$oldpwd = GetEncodePwd($oldpwd);
if(!is_array($row)||$row['pwd']!=$oldpwd){
$dsql->Close();
ShowMsg("你输入的旧密码错误！","-1");
exit();
}
$pwd = GetEncodePwd($pwd);
$query = "update #@__member set pwd = '$pwd' where ID='".$cfg_ml->M_ID."'";
$dsql->ExecuteNoneQuery($query);
ShowMsg("成功更改你的密码！","-1");
exit();
}
else if($dopost=="editUser")
{
CheckRank(0,0);
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
$query1 = "
update #@__member set
email = '$email',uname = '$uname'
where ID='".$cfg_ml->M_ID."'
";
$query2 = "
update #@__member_perinfo set
uname = '$uname',
sex = '$sex',
birthday = '$birthday',
weight = '$weight',
height = '$height',
job = '$job',
province = '$province',
city = '$city',
myinfo = '$myinfo',
fullinfo = '$fullinfo',
showaddr = '$showaddr',
address = '$address',
oicq = '$oicq',
tel = '$tel',
homepage = '$homepage'
where ID='".$cfg_ml->M_ID."'
";
$dsql = new DedeSql(false);
$dsql->ExecuteNoneQuery($query1);
$dsql->ExecuteNoneQuery($query2);
$dsql->Close();
ShowMsg("成功更新你的个人资料！","edit_info.php");
exit();
}
/*
更改个人空间资料
function EditSpace()
*/
else if($dopost=="editSpace")
{
CheckRank(0,0);
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
require_once("./inc/inc_archives_functions.php");
$title = "空间形象";
$spaceimage = GetUpImage('spaceimage',true,true,150,112,'myface');
if($spaceimage=="" && $oldimg!="" && $oldimg!="img/pview.gif"){
if(file_exists($cfg_basedir.$oldimg)){
$spaceimage = $oldimg;
}
}
$dsql = new DedeSql(false);
$news = addslashes(cn_substr(stripslashes($news),1024));
$news = eregi_replace("<(iframe|script|javascript)","",$news);
$spacename = ereg_replace("[><]","",$spacename);
$mybb = addslashes(html2text(stripslashes($mybb)));
$upquery = "Update #@__member set
spacename='$spacename',spaceimage='$spaceimage',news='$news',mybb='$mybb'
where ID='".$cfg_ml->M_ID."';
";
$ok = $dsql->ExecuteNoneQuery($upquery);
if($ok){
$dsql->Close();
ShowMsg("成功更新你的个人空间介绍！","space_info.php?".time().mt_rand(100,900));
exit();
}else{
$dsql->Close();
ShowMsg("更新资料失败！","space_info.php?".time().mt_rand(100,900));
exit();
}
}
//
break;
/*********************
function B_Login()
*******************/
case "login":
//
/*
用户登录
function BUserLogin()
*/
if($dopost=="login")
{
if($cfg_pp_isopen==1 && $cfg_pp_loginurl!=''){
header("Location:{$cfg_pp_loginurl}");
exit();
}
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
if(!TestStringSafe($userid)||!TestStringSafe($pwd))
{
ShowMsg("用户名或密码不合法！","-1",0,2000);
exit();
}
if($userid==""||$pwd==""){
ShowMsg("用户名或密码不能为空！","-1",0,2000);
exit();
}
//检查帐号
$rs = $cfg_ml->CheckUser($userid,GetEncodePwd($pwd));
if($rs==0) {
ShowMsg("用户名不存在！","-1",0,2000);
exit();
}
else if($rs==-1){
ShowMsg("密码错误！","-1",0,2000);
exit();
}
else{
$dsql->SetQuery("update #@__member set logintime='".time()."',loginip='".GetIP()."' where ID='".$cfg_ml->M_ID."'");
$dsql->ExecuteNoneQuery();
$dsql->Close();
if(empty($gourl)||eregi("action|_do",$gourl)){
ShowMsg("成功登录，5秒钟后转向系统管理中心...","control.php",0,2000);
}else{
ShowMsg("成功登录，转到进入页面...",$gourl,0,2000);
}
exit();
}
}
/*
退出登录
function BUserExit()
*/
else if($dopost=="exit")
{
$cfg_ml->ExitCookie();
if($cfg_pp_isopen==1 && $cfg_pp_exiturl!=''){
echo "<script> location='{$cfg_pp_exiturl}'; </script>";
exit();
}
$cfg_ml->ExitCookie();
if(empty($cfg_mb_exiturl)) $cfg_mb_exiturl = $cfg_indexurl;
if(empty($cfg_mb_exiturl)) $cfg_mb_exiturl = '/';
ShowMsg("成功退出登录！",$cfg_mb_exiturl,0,2000);
exit();
}
/*
获取密码
function BUserGetPwd()
*/
else if($dopost=="getpwd")
{
if($cfg_pwdtype=='md5'){
ShowMsg("系统的密码被设置为单向加密，无法取回，请与管理员联系。","javascript:;");
exit();
}
$svali = GetCkVdValue();
if(strtolower($vdcode)!=$svali || $svali==""){
ShowMsg("验证码错误！","-1");
exit();
}
if(!ereg("(.*)@(.*)\.(.*)",$email)||!TestStringSafe($email)){
ShowMsg("邮箱地址格式不正确！","-1");
exit();
}
$dsql = new DedeSql(false);
$row = $dsql->GetOne("Select userid,pwd,uname,email From #@__member where email='$email'");
if(!is_array($row)){
$dsql->Close();
ShowMsg("系统找不到此邮箱地址！","-1");
exit();
}
$dsql->Close();
$mailtitle = "你在".$cfg_webname."的用户名和密码";
$mailbody = "\r\n用户名：'".$row['userid']."' 密码：'".$row['pwd']."'\r\n\r\n，
$cfg_powerby";
$headers = "From: ".$cfg_adminemail."\r\nReply-To: $cfg_adminemail";
sendmail($email, $mailtitle, $mailbody, $headers);
$gurl = explode("@",$email);
ShowMsg("成功发出你的用户名和密码，请注意查收！","login.php");
exit();
}
//
break;
}
?>
