我是第一个尝试这个的，我已经给出了$to:my gmail，当我单击提交时，它没有显示任何错误，但我没有收到任何邮件到我的gmail。怎么了？我做了：
<html>
<body>
<form method="post" name="myemailform" action="form-to-email.php">
<p>
<label for='name'>Enter Name: </label><br>
<input type="text" name="name">
</p>
<p>
<label for='email'>Enter Email Address:</label><br>
<input type="text" name="email">
</p>
<p>
<label for='message'>Enter Message:</label> <br>
<textarea name="message"></textarea>
</p>
<input type="submit" name='submit' value="submit">
</form>
</body>
</html>
.PHP：-表单到电子邮件.php
<?php
if(!isset($_POST['submit']))
{
//This page should not be accessed directly. Need to submit the form.
echo "error; you need to submit the form!";
}
$name = $_POST['name'];
$visitor_email = $_POST['email'];
$message = $_POST['message'];
//Validate first
if(empty($name)||empty($visitor_email))
{
echo "Name and email are mandatory!";
exit;
}
if(IsInjected($visitor_email))
{
echo "Bad email value!";
exit;
}
$email_from = 'tom@amazing-designs.com';//<== update the email address
$email_subject = "New Form submission";
$email_body = "You have received a new message from the user $name.'n".
"Here is the message:'n $message".
$to = "kasani.prabha@GMAIL.com";//<== update the email address
$headers = "From: $email_from 'r'n";
$headers .= "Reply-To: $visitor_email 'r'n";
//Send the email!
mail($to,$email_subject,$email_body,$headers);
//done. redirect to thank-you page.
header('Location: thank-you.html');
// Function to validate against any email injection attempts
function IsInjected($str)
{
$injections = array('('n+)',
'('r+)',
'('t+)',
'(%0A+)',
'(%0D+)',
'(%08+)',
'(%09+)'
);
$inject = join('|', $injections);
$inject = "/$inject/i";
if(preg_match($inject,$str))
{
return true;
}
else
{
return false;
}
}
?>
那$email_from呢？它应该是一封有效的电子邮件;我的意思是如果我在提交时输入abc@abc.ac错误的电子邮件，我将不会收到邮件？
来自 SMTP 服务器的电子邮件未验证，但当最终用户尝试回复时，问题将开始，它将被传递或退回到email_from中添加的电子邮件地址。SMTP 提供商还会验证您是否应该是电子邮件域的所有者，例如
abc@abc.com
您应该是
abc.com
为此，他们提供了某种需要添加到域中的密钥 DNS条目 。原因是为了避免垃圾邮件。