<body>
<? php echo "显示显示"; ?>
<?php
include("connpeo.php");
if(!empty($_POST['sub'])){
$admin=$_POST['admin'];
$password=$_POST['password'];
$group=$_POST['group'];
echo $sql="insert into `people`(`admin`,`password`,`group`,`id`) values('$admin','$password','$group','id')";
mysql_query($sql);
echo "成功";
}
?>
<div id="bac">
<h2><?php echo "请登录"; ?></h2>
<form method="POST" action="logo.php">
<dl>
<dd>账 号: <input name="admin" class="text" type="text"></dd>
<dd>密 码: <input name="password" class="text" type="password"></dd>
<dd>组 别: <input name="group" class="text" type="text"></dd>
<dd><input type="submit" name="sub" value="登陆"></dd>
</dl>
</form>
</div>
</body>
为什么这些php代码执行不了,如果想让这个php代码执行应该怎么办?