我有这个表格，我在整个网站上都使用过它，它工作正常，但是当我在我的内容中使用额外的数据时，它会停止发送，即使它没有显示有错误的消息或任何其他消息
这是它自己的形式
<form action="" method="post">
<table width="683" border="0" cellspacing="0" cellpadding="10">
<tr>
<td width="96">Full Name</td>
<td colspan="4"><label for="textfield"></label>
<input type="text" name="fname" id="fname" /></td>
</tr>
<tr>
<td>E-mail</td>
<td colspan="4"><input type="text" name="email" id="email" /></td>
</tr>
<tr>
<td>Company</td>
<td colspan="4"><input type="text" name="company" id="company" /></td>
</tr>
<tr>
<td colspan="5">How do you rate our services and products:</td>
</tr>
<tr>
<td> </td>
<td width="120"><input type="radio" name="s_rate" id="Poor" value="Poor" />
Poor </td>
<td width="120"><input type="radio" name="s_rate" id="Good" value="Good" />
Good </td>
<td width="120"><input type="radio" name="s_rate" id="Very_Good" value="Very Good" />
Very Good </td>
<td width="127"><input type="radio" name="s_rate" id="Excellent" value="Excellent" />
Excellent</td>
</tr>
<tr>
<td colspan="5"><p>How did you know about us?</p></td>
</tr>
<tr>
<td> </td>
<td><input type="radio" name="know" id="Google" value="Google" />
Google</td>
<td><input type="radio" name="know" id="E_mail" value="E-mail" />
E-mail</td>
<td><input type="radio" name="know" id="A_friend" value="A friend" />
A friend</td>
<td><input type="radio" name="know" id="Social_Media" value="Social Media" />
Social Media</td>
</tr>
<tr>
<td> </td>
<td colspan="2"><input type="radio" name="know" id="advertisement" value="An advertisement at a web site" />
An advertisement at a web site</td>
<td colspan="2"><input type="radio" name="know" id="Old_customer" value="I am an old customer" />
I am an old customer</td>
</tr>
<tr>
<td colspan="5">Would you recommend us to your friends and colleagues:</td>
</tr>
<tr>
<td> </td>
<td><input type="radio" name="recommend" id="Yes" value="Yes" />
Yes </td>
<td><input type="radio" name="recommend" id="No" value="No" />
No</td>
<td> </td>
<td> </td>
</tr>
<tr>
<td colspan="5">Do you have any suggestions to make us improve our services?</td>
</tr>
<tr>
<td> </td>
<td colspan="4">
<textarea name="message" id="message" cols="45" rows="5"></textarea></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" id="button" value="Submit" /></td>
</tr>
</table>
</form>
这是我的 php 代码
<?php
if(isset($_POST['submit'])){
echo "done";
$name = $_POST['fname'];
$email = $_POST['email'];
$company = $_POST['company'];
$s_rate = $_POST['s_rate'];
$know = $_POST['know'];
$recommend = $_POST['recommend'];
$message = $_POST['message'];
$recipient = 'johnef_sh@hotmail.com';
$subject="feedback";
$content = "New feedback \n From: ".$name.",\n Email: ".$email.", \n Company: ".$company.", \n He rate our services as: ".$s_rate.", \n He know about us from: ".$know.", \n Would he recommend us to his friends: ".$recommend.", \n He's suggestions was: ".$message;
$headers = 'From: feedback@hostnile.com' . "\r\n" .
'Reply-To: johnef_sh@hotmail.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
$retval=mail($recipient, $message, $content, $headers);
if($retval==true)
{
echo "<span style='color:green; font-size:16px; margin-left:35px; font-family:Arial, Helvetica, sans-serif;'>Message sent successfully...</span>";
}
else
{
echo "<span style='color:red; font-size:16px; margin-left:35px; font-family:Arial, Helvetica, sans-serif;'>Message could not be sent...</span>";
}
}
?>
现在，当我提交表单时，我返回同一页面，没有任何结果，邮件没有发送任何内容，甚至没有消息。
内容是
$content = "New feedback \n From: ".$name.",\n Email: ".$email.", \n Company: "
.$company.", \n He rate our services as: ".$s_rate.", \n He know about us from: "
.$know.", \n Would he recommend us to his friends: "
.$recommend.", \n He's suggestions was: ".$message;
我把很多数据放进去有什么不同吗？
谢谢并恭祝安康。