我的留言簿中的所有字段都显示为空白

Question

我一直在尝试使用教程来创建留言簿，但实际传输到我的留言簿的唯一数据是日期和时间。

我有一个数据库设置为：

Id|姓名|电子邮件|评论|日期时间

我有 3 页：

addguestbook.php

<?php
$host="localhost"; // Host name 
$username="foo"; // Mysql username 
$password="bar"; // Mysql password 
$db_name="foo"; // Database name 
$tbl_name="guestbook"; // Table name 

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect server "); 
mysql_select_db("$db_name")or die("cannot select DB");

$datetime=date("y-m-d h:i:s"); //date time

$sql="INSERT INTO guestbook(Name, Email, Comment, Datetime)VALUES('$name', '$email', '$comment', '$datetime')";
$result=mysql_query($sql);

//check if query successful 
if($result){
echo "Successful";
echo "<BR>";

// link to view guestbook page
echo "<a href='viewguestbook.php'>View guestbook</a>";
}

else {
echo "ERROR";
}
mysql_close();
?>

guestbook.php

<table width="400" border="0" align="center" cellpadding="3" cellspacing="0">
<tr>
<td><strong>Test Sign Guestbook </strong></td>
</tr>
</table>
<table width="400" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form id="form1" name="form1" method="post" action="addguestbook.php">
<td>
<table width="400" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td width="117">Name</td>
<td width="14">:</td>
<td width="357"><input name='name' type="text" id="name" size="40" /></td>
</tr>
<tr>
<td>Email</td>
<td>:</td>
<td><input name='email' type="text" id="email" size="40" /></td>
</tr>
<tr>
<td valign="top">Comment</td>
<td valign="top">:</td>
<td><textarea name='comment' cols="40" rows="3" id="comment"></textarea></td>
</tr>
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td><input type="submit" name="Submit" value="Submit" /> <input type="reset" name="Submit2" value="Reset" /></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
<table width="400" border="0" align="center" cellpadding="3" cellspacing="0">
<tr>
<td><strong><a href="viewguestbook.php">View Guestbook</a> </strong></td>
</tr>
</table>

&viewguestbook.php

<table width="400" border="0" align="center" cellpadding="3" cellspacing="0">
<tr>
<td><strong>View Guestbook | <a href="guestbook.php">Sign Guestbook</a> </strong></td>
</tr>
</table>
<br>

<?php

$host="localhost"; // Host name 
$username="foo"; // Mysql username 
$password="bar"; // Mysql password 
$db_name="foo"; // Database name 
$tbl_name="guestbook"; // Table name 

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect server "); 
mysql_select_db("$db_name")or die("cannot select DB");
$sql="SELECT * FROM $tbl_name";
$result=mysql_query($sql);
while($rows=mysql_fetch_array($result)){
?>

<table width="400" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td><table width="400" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td>ID</td>
<td>:</td>
<td><? echo $rows['id']; ?></td>
</tr>
<tr>
<td width="117">Name</td>
<td width="14">:</td>
<td width="357"><? echo $rows['Name']; ?></td>
</tr>
<tr>
<td>Email</td>
<td>:</td>
<td><? echo $rows['Email']; ?></td>
</tr>
<tr>
<td valign="top">Comment</td>
<td valign="top">:</td>
<td><? echo $rows['Comment']; ?></td>
</tr>
<tr>
<td valign="top">Date/Time </td>
<td valign="top">:</td>
<td><? echo $rows['Datetime']; ?></td>
</tr>
</table></td>
</tr>
</table>

<?php
}
mysql_close(); //close database
?>

viewguestbook.php 工作正常，只是除了日期之外没有数据实际上进入我的数据库..

Answer 1

当您插入表单字段时，您不会检索它们：

$datetime=date("y-m-d h:i:s"); //date time
$sql="INSERT INTO guestbook(Name, Email, Comment, Datetime)VALUES('$name', '$email', '$comment', '$datetime')";

日期时间进入的唯一原因是因为您实际上首先得到它。您需要从表单中获取 $name、$email 和 $comment，例如：

$name = $_POST['name'];
$email = $_POST['email'];
$comment = $_POST['comment'];

在插入之前。附带说明一下，您的表格/表单的 HTML 无效。你不能只在表格中间注入一个表格。