用户的详细注册和判断

t>
</font></div>
</td>
</tr>
<tr>
<td colspan="2" height="19">
<div align="center">

<input type=image name=name2 src=/uploadfile/201210/17/3C20928291.gif" width="68" height="22" border="0">
<input type=hidden name=name3 value=<?echo$name?>>
　<a href="zcyh.php"><img src=/uploadfile/201210/17/B320928937.gif" width="68" height="22" border="0"></a></div>
</td>
</tr>
</table>
</form>
<br>

</div>
<br>
<?include("foot.inc.php")?>
</body>
</html>
第二个是：register.php(判断注册用户名是否正确和是否重复，然后输出注册的详细表单)
<?include("header1.inc.php")?>
<div align=center>
<table width="89%" border="0">
<tr>
<td><font color="#ff0000">当前位置：<a href="index.php">主页</a>&gt;&gt;<a href=zcyh.php>注册页面</a>&gt;&gt;详细资料</font></td>
</tr>
</table><br>
<?
if($name==""){
echo"<br><center><font color=blue>用户名不能为空。请</font><a href=zcyh.php>返回</a></center><br>";
include("foot.inc.php");
exit();
}
if(strlen($name)<3 || strlen($name)>15){
echo"<br><center><font color=blue>用户名的长度不符合要求。请</font><a href=zcyh.php>返回</a></center><br>";
include("foot.inc.php");
exit();
}
if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*contentquot;, $name)) {
echo"<br><center><font color=blue>注册名只能由字母数字组成.请</font><a href=zcyh.php>返回</a></center><br>";
include("foot.inc.php");
exit();
}
if ($name)
{
$conn=@mysql_connect("localhost");
$sql=@mysql_select_db("jocky",$conn);
$result=@mysql_query("select * from user1 where name=''$name''" ,$conn);
if($result){
if(@mysql_fetch_object($result)){
echo"<br><center><font color=blue>对不起，已经有相同的用户名！请</font><a href=zcyh.php>返回</a>.</center><br>";}
else{$conn=@mysql_connect("localhost");
$sql=@mysql_select_db("jocky",$conn);
$sqldo="insert into user1 (name) values (''$name'')";
@mysql_query($sqldo,$conn);
echo"<br><center><font color=blue>你好，</font>";
echo"<font color=red><b>$name</b></font></center>";
include("zhuce.php");
@mysql_close($conn);}
include("foot.inc.php");
exit();
}
}
?>
</div>
<?include("foot.inc.php")?>
</body>
</html>
第三个是：check.php(判断注册资料是否正确，然后插入数据库，重新登录)
<?include(&q