我的网站允许用户向保存在我的数据库中的给定电子邮件地址发送电子邮件。现在我的网站已经上线了，我正在测试这样的东西，结果发现我的contact.php不起作用。当我尝试发送电子邮件时，我总是收到消息Sorry, there was an error sending your message.。
My Contact.php有以下代码
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
include 'dbcontroller.php';
if (isset($_POST['sendMessage'])) {
if(empty($_POST['firstname']) || empty($_POST['lastname']) || empty($_POST['email']) || empty($_POST['message'])) {
echo "<script type='text/javascript'>alert('Please fill all the fields.');window.location.href='contact.php'</script>";
}
else{
$sql = "SELECT * from contact";
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_array($result);
$to = $row['email'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$mailfrom = $_POST['email'];
$message = $_POST['message'];
$headers = "From:" . $firstname . " " . $lastname . "'r'n" . $mailfrom;
if (mail($to, $message, $headers)) {
echo "<script type='text/javascript'>alert('Your email has been sent! Thank you for contacting us!');window.location.href='contact.php'</script>";
}
else{
echo "<script type='text/javascript'>alert('Sorry there was an error sending your message.');window.location.href='contact.php'</script>";
}
}
}
?>
这是我的联系人表单，它和PHP代码在同一个页面上。
<form method="post" action"">
<label>First Name </label>
<input type="text" class="form-control" placeholder="Firstname" name="firstname" required="required" />
<label>Last Name</label>
<input type="text" class="form-control" placeholder="Lastname" name="lastname" required="required"/>
<label>Email-address</label>
<input type="email" class="form-control" placeholder="Email" name="email" required="required" maxlength="200"/>
<label>Message </label>
<textarea name="message" class="form-control" required="required" rows="4" cols="50" maxlength="500"></textarea>
<input type="submit" name="sendMessage" value="Send Email" class="btn btn-primary pull-right"/>
</form>
首先，我可以看到$fn和$ln没有填充在任何位置，所以它们是空值。这可能是一个原因。我看到的另一件事是标题。我认为他们遗漏了一些微不足道的东西。以下是我一直使用的：
[狙击]
$headers = "From: $botmail'n"; // Who the email was sent from
$headers .= "MIME-Version: 1.0'n";
$headers .= "Content-Type: text/plain; charset=UTF-8'n";
$headers .= "X-Priority: $priority'n"; // The priority of the mail
$success = mail($receivermail, $subject, $message, $headers);