用ＰＨＰ和ＡＣＣＥＳＳ写聊天室(一)_php基础

ＩＮＤＥＸ.ＰＨＰ
代码如下!

function delquot($sStr){
    $s=str_replace(chr(124),"",$sStr);
    $s=str_replace(chr(39),"",$s);
    $s=str_replace(chr(34),"",$s);
    return $s;
}

if ($cmdYes=="进   入"){
    $sUserName=htmlspecialchars(trim(delquot($sUserName)));
    if ($sUserName=="superldz" && $sPass="superldz"){
        $sUserID=1;
        include("chtmain.php3");
        exit();
    }
    else{
        $ConnID=@odbc_connect("jtfcht","admin","");
        if ($ConnID){
            $result=@odbc_exec($ConnID,"SELECT UserID,UserName,PassWord,RoomID,Sex FROM User WHERE UserName='".$sUserName."'");
            if (@odbc_fetch_into($result,0,&$rArr)){
                $sUserID=$rArr[0];
                if ($rArr[2]==$sPass){
                    if ($rArr[3]==0){
                        @odbc_exec($ConnID,"UPDATE User SET RoomID=1,LstDate='".date("Y.m.d")."',ToID=0,ToName='大家',Secret=False,FirstTime=True,LstTime=".time()." WHERE UserID=".$sUserID);
                        if ($rArr[4])
                            @odbc_exec($ConnID,"INSERT INTO ChtCont (sIDFrom, sNameFrom, sIPFrom, sIDTo, sNameTo, sTime, sCont, bSecret, RoomID) VALUES (".$rArr[0].", '".$rArr[1]."', '".getenv("REMOTE_ADDR")."', 0, '大家', '".date("H:i:s")."', '【系统消息】欢迎".$rArr[1]."来到了这个聊天室', False, 1)");
                        else
                            @odbc_exec($ConnID,"INSERT INTO ChtCont (sIDFrom, sNameFrom, sIPFrom, sIDTo, sNameTo, sTime, sCont, bSecret, RoomID) VALUES (".$rArr[0].", '".$rArr[1]."', '".getenv("REMOTE_ADDR")."', 0, '大家', '".date("H:i:s")."', '【系统消息】欢迎".$rArr[1]."来到了这个聊天室', False, 1)");
                        include("chtmain.php3");
                        exit();
                    }
                    else $sErrText="登录出错，已经有人用这个名字登录了！";
                }
                else $sErrText="登录出错，口令不正确！";
            }
            else $sErrText="登录出错，用户没注册！";
            @odbc_close($ConnID);
        }
        else $sErrText="系统故障，暂时无法登录";
    }
}
?>