我正在尝试通过电子邮件在本地服务器上发送表单数据，但始终收到以下错误消息： 警告：mail（）：无法通过“ localhost”端口25连接到邮件服务器，无法验证php.ini中的“ SMTP”和“ smtp_port”设置，或在C：\ Program Files \ Ampps \ www \ test1中使用ini_set（）。 138行上的php 这是我的代码：
<!DOCTYPE html>
<html lang="en">
<head>
<title> A quick test </title>
<link href="https://fonts.googleapis.com/css?family=Roboto+Condensed&display=swap" rel="stylesheet">
<style>
body {
background-color:#5F9EA0;
font-family: 'Roboto Condensed', sans-serif;
color: white;
}
div.header{
position:absolute;
top: 0;
left:0;
padding: 5px;
background-color: white;
border: 2px solid Aliceblue;
width:99%;
}
div.wrapper{
position:relative;
}
div.topleft{
position:absolute;
left:20.5%;
top:45px;
width:auto;
text-align: left;
}
div.content{
position:absolute;
left:21%;
top:18%;
width:auto;
text-align: left;
font-size: 16px;
color:aliceblue;
}
div.form{
position:absolute;
left:21%;
top:30%;
width:50%;
text-align: left;
font-size:16px;
color:aliceblue;
}
input{
padding:7.5px 15px;
margin:8px 0;
border: 2px solid aliceblue;
border-radius: 5px;
}
textarea{
padding:7.5px 15px;
margin:8px 0;
border:2px solid aliceblue;
border-radius:5px;
}
.error {
color: #FF0000;
}
</style>
</head>
<body>
<?php
$FirstName = $LastName = $email = $phone = $phone1 = $phone2 = $subject = $message = "";
$FirstNameErr = $LastNameErr = $emailErr = $phoneErr = $phone1Err = $phone2Err = $subjectErr = $messageErr = "";
function test_input($data){
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if ($_SERVER["REQUEST_METHOD"] == "POST"){
if (empty($_POST["FirstName"])){
$FirstNameErr = "*Your first name is required.";
} else {
$FirstName = test_input($_POST["FirstName"]);
if (!preg_match("/^[a-zA-Z ]*$/", $FirstName)){
$FirstNameErr = "*Only letters and whitespace allowed.";
}
}
if (empty($_POST["LastName"])){
$LastNameErr = "*Your last name is required.";
} else {
$LastName = test_input($_POST["LastName"]);
if (!preg_match("/^[a-zA-Z ]*$/", $LastName)){
$LastNameErr = "*Only letters and whitespace allowed.";
}
}
if (empty($_POST["email"])){
$emailErr = "*Your email is required.";
} else {
$email = test_input($_POST["email"]);
if (!filter_var($email, FILTER_VALIDATE_EMAIL)){
$emailErr = "*Invalid email format.";
}
}
if (empty($_POST["phone"])){
$phoneErr = "*Your phone number is required.";
} else {
$phone = test_input($_POST["phone"]);
if (!preg_match("/^[0-9 ]*$/", $phone)){
$phoneErr = "*Invalid phone number.";
}
}
if (empty($_POST["subject"])){
$subjectErr = "*The subject of your message is required.";
} else {
$subject = test_input($_POST["subject"]);
if (!preg_match("/^[a-zA-Z ]*$/", $subject)){
"*Only letters and whitespace may be used in the subject.";
}
}
if (empty($_POST["message"])){
$messageErr = "*You must input a message.";
} else {
$message = test_input($_POST["message"]);
if (!preg_match("/^[a-zA-Z0-9]*$/", $message)){
"*Only letters, numbers, and whitespace allowed.";
}
}
}
?>
<?php
$FirstName = $_POST["FirstName"];
$LastName = $_POST["LastName"];
$email = $_POST["email"];
$phone = $_POST["phone"];
$subject = $_POST["subject"];
$message = $_POST["message"];
$headers = "From: $email\n";
$sent = mail('christina.adkisson@mail.com', 'Feedback Form Submission', $message, $headers);
if ($sent) {
echo "<html>
<head>
<title>Thank You</title>
</head>
<body>
<h1>Thank You</h1>
<p>Thank you for your feedback.</p>
</body>
</html>";
} else {
echo "<html>
<head>
<title>Something went wrong</title>
</head>
<body>
<h1>Something went wrong</h1>
<p>We could not send your feedback. Please try again.</p>
</body>
</html>";
}
?>
<div class="header">
<img src="http://localhost/images/pink.png" height="15px" width="15px">
<img src="http://localhost/images/blue.png" height="15px" width="15px">
<img src="http://localhost/images/green.png" height="15px" width="15px">
</div>
<div class="wrapper">
<div class="topleft">
<h1>Contact Form</h1>
</div>
</div>
<div class="content">
<p>Please fill in your information and we'll contact you in no time.</p>
</div>
<div class="form">
<form method="post" id="form">
First name: <input type="text" name="FirstName" value="<?php echo $FirstName;?>" size="65">
<span class="error"><?php echo $FirstNameErr;?></span>
<br>
Last name: <input type="text" name="LastName" value="<?php echo $LastName;?>"size="65">
<span class="error"><?php echo $LastNameErr;?></span>
<br>
Your email: <input type="email" name="email" value="<?php echo $email;?>" size="65">
<span class="error"><?php echo $emailErr;?></span>
<br>
Phone number: <input type="text" name="phone" value="<?php echo $phone;?>" size="61">
<span class="error"><?php echo $phoneErr;?></span>
<br>
Message Subject: <input type="text" name="subject" value="<?php echo $subject;?>" size="59">
<span class="error"><?php echo $subjectErr;?></span>
<br>
Message:
<br>
<textarea name="message" rows="7" cols="78"><?php echo $message;?></textarea>
<span class="error"><?php echo $messageErr;?></span>
<br>
<input type="submit" value="Send email"/><hr>
</form>
</div>
</body>
</html>
我是php的新手，所以我不确定自己在做什么错。