我意识到这可能是不好的做法，但是......我使用了一个简单的 php 脚本，这是我在多年前阅读的一本教程书的帮助下编写的。我已经尽可能多地对其进行了调整以用于多个站点，但它在各个站点之间基本相同。我已经尝试并尝试消除垃圾邮件类型的消息，但可惜我无法弄清楚我还能做什么/可以做什么。我敢肯定有人会提到这一点，例如Javascript 会更好，但我现在没有时间或动力去学习它，所以请坚持使用 PHP。具体代码如下，对于如何在未来证明这一点以消除垃圾邮件的建议将不胜感激。
联系方式：
<?php
define ('SITE_KEY', '...');
define ('SECRET_KEY', '...');
if (array_key_exists('send', $_POST)) {
function getCaptcha($SecretKey) {
$Response = file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".SECRET_KEY."&response={$SecretKey}");
$Return = json_decode($Response);
return $Return;
}
$Return = getCaptcha($_POST['g-recaptcha-response']);
//var_dump($Return);
// mail processing script
$to = 'email1';
$me = 'email2';
$subject = 'Feedback From Website';
// list expected fields
$expected = array('name', 'email', 'question');
// set required fields
$required = array('name', 'email', 'question');
// set additional headers
$headers = 'From: Megan Roth<[email protected]>';
// set the include
$process = 'includes/process.inc.php';
if (file_exists($process) && is_readable($process)) {
include($process);
}
else {
$mailSent = false;
mail($me, 'Server Problem', "$process cannot be read", $headers);
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta property="og:title" content="Megan Roth, Mezzo-Soprano - Contact">
<meta property="og:type" content="website">
<meta property="og:image" content="http://www.meganroth.com/EditedImages/index.jpg">
<meta property="og:url" content="http://www.meganroth.com/contact.php">
<meta property="og:description" content="Mezzo-soprano Megan Roth enjoys a career as a soloist in opera and oratorio as well as with prestigious chamber ensembles around the country.">
<title>Megan Roth, Mezzo-Soprano - Contact</title>
<meta name="description" content="Mezzo-soprano Megan Roth enjoys a career as a soloist in opera and oratorio as well as with prestigious chamber ensembles around the country.">
<meta name="author" content="Nathan Roth" >
<link href="css/w3_parallax_template.css" type="text/css" rel="stylesheet">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Crimson+Pro">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=EB+Garamond">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Domine">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link href="css/parallax12.css" type="text/css" rel="stylesheet">
<style>
/************* ABOVE THIS LINE GLOBAL ***************/
form { width: 100%; }
form p { margin: 0px 0px 25px 20px; }
textarea {
width: 380px;
height: 150px;
}
@media screen and (max-width: 400px) { textarea {
width: 240px;
height: 120px;
} }
.textInput { width: 300px; }
@media screen and (max-width: 400px) { .textInput { width: 125px; } }
.sendButton { border:1px solid #000000!important; color: #000; background-color: #FAC41E; }
.sendButton:hover { border:1px; color:#000000; background-color: #08748F; }
form .website{ display:none; } /* hide because is spam protection */
.conStudio {
font-family: "EB Garamond", Times, "Times New Roman", serif;
font-size: 1.4em;
line-height: 1.68em;
color: #FAC41E;
font-weight: bold;
margin: 0px 0px 0px 0px;
}
</style>
<script>
<!--
function MM_validateForm() { //v4.0
if (document.getElementById){
var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
} else if (test!='R') { num = parseFloat(val);
if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
min=test.substring(8,p); max=test.substring(p+1);
if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
} if (errors) alert('The following error(s) occurred:\n'+errors);
document.MM_returnValue = (errors == '');
} }
//-->
</script>
<script src="https://www.google.com/recaptcha/api.js?render=6LcEl-8UAAAAAMlzOfIDXmnooj34lkDNfKDTxN2m"></script>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-34193066-1"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-34193066-1');
</script>
</head>
<body>
<?php include("includes/new_navigation12.inc.php"); ?>
<!-- Container -->
<div class="w3-content w3-container w3-padding-64">
<div class="w3-row">
<div class="hdquote">
"…(her) soaring mezzo-soprano is clean and clear and her vocal glissandos precise and near perfect."<br>
- <em>Asheville Citizen-Times</em><br>
<strong>The Barber of Seville</strong>, Brevard Music Center.
<div class="decLine"></div>
</div>
</div>
<div class="w3-row">
<div class="w3-col m9 w3-padding-large">
<?php
if ($_POST && isset($missing) && !empty($missing)) {
?>
<p class="warning">Please complete the missing item(s) indicated.</p>
<?php
}
elseif ($_POST && $linkOne) {
?>
<p class="warning">Sorry, Messages that contain inappropriate data will not be sent.</p>
<?php
}
elseif ($_POST && $linkTwo) {
?>
<p class="warning">Sorry, Messages that contain inappropriate data will not be sent.</p>
<?php
}
elseif ($_POST && $linkThree) {
?>
<p class="warning">Sorry, Messages that contain inappropriate data will not be sent.</p>
<?php
}
elseif ($_POST && !$mailSent) {
?>
<p class="warning">Sorry, there was a problem sending your message. Please try again later.</p>
<?php
}
elseif ($_POST && $Return->success == true && $Return->score > 0.5 && $mailSent) {
?>
<p class="success">Your message has been sent. Thank you for your comments/questions!</p>
<?php } ?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" name="contact" id="contact" class="w3-container w3-card-4" onSubmit="MM_validateForm('name','','R','email','','RisEmail','comments','','R');return document.MM_returnValue">
<p><input name="website" type="text" class="website"></p>
<p>
<label for="name">Name: <?php
if (isset($missing) && in_array('name', $missing)) { ?>
<span class="warning">Please enter your name</span><?php } ?>
</label>
<input name="name" type="text" class="textInput" id="name"
<?php if (isset($missing)) {
echo 'value="'.htmlentities($_POST['name'], ENT_QUOTES).'"';
} ?>
>
</p>
<p>
<label for="email">Email: <?php
if (isset($missing) && in_array('email', $missing)) { ?>
<span class="warning">Please enter your email address</span><?php } ?>
</label>
<input name="email" type="text" class="textInput" id="email"
<?php if (isset($missing)) {
echo 'value="'.htmlentities($_POST['email'], ENT_QUOTES).'"';
} ?>
>
</p>
<p>
<label for="question">Comments:<?php
if (isset($missing) && in_array('question', $missing)) { ?>
<span class="warning">Please enter your comments</span><?php } ?>
</label>
<textarea name="question" id="question" cols="25" rows="5"><?php
if (isset($missing)) {
echo htmlentities($_POST['question'], ENT_QUOTES);
} ?></textarea>
</p>
<p>
<input type="hidden" id="g-recaptcha-response" name="g-recaptcha-response">
</p>
<p>
<input class="sendButton" type="submit" name="send" id="send" value="Click to Submit Comments">
</p>
</form>
<script>
grecaptcha.ready(function() {
grecaptcha.execute('<?php echo SITE_KEY; ?>', {action: 'homepage'}).then(function(token) {
//console.log(token);
document.getElementById('g-recaptcha-response').value=token;
});
});
</script>
<p class="welcome">Please take this time to send comments and your email address so we can stay in touch with you!</p><br><br>
</div>
<div class="w3-col m3 w3-padding-large">
<img class="border" src="EditedImages/Contact.jpg" alt="Headshot for Megan Roth's Contact Webpage">
</div>
</div>
<div class="w3-row w3-center">
<span class="conStudio">Interested in private lessons? Please visit my <a href="http://studio.meganroth.com/" onclick="window.open(this.href, '_blank');return false;">studio site!</a></span>
</div>
</div>
<!-- Footer -->
<?php include("includes/new_footer12.inc.php"); ?>
<script>
// Change style of navbar on scroll
window.onscroll = function() {myFunction()};
function myFunction() {
var navbar = document.getElementById("myNavbar");
if (document.body.scrollTop > 100 || document.documentElement.scrollTop > 100) {
navbar.className = "w3-bar" + " w3-card" + " w3-animate-top" + " w3-white";
} else {
navbar.className = navbar.className.replace(" w3-card w3-animate-top w3-white", "");
}
}
// Used to toggle the menu on small screens when clicking on the menu button
function toggleFunction() {
var x = document.getElementById("navDemo");
if (x.className.indexOf("w3-show") == -1) {
x.className += " w3-show";
} else {
x.className = x.className.replace(" w3-show", "");
}
}
// Toggle between showing and hiding the sidebar, and add overlay effect
function w3_open() {
if (mySidebar.style.display === 'block') {
mySidebar.style.display = 'none';
overlayBg.style.display = "none";
} else {
mySidebar.style.display = 'block';
overlayBg.style.display = "block";
}
}
// Close the sidebar with the close button
function w3_close() {
mySidebar.style.display = "none";
overlayBg.style.display = "none";
}
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("w3-show");
}
// Close the dropdown if the user clicks outside of it
window.onclick = function(e) {
if (!e.target.matches('.dropbtn')) {
var myDropdown = document.getElementById("myDropdown");
if (myDropdown.classList.contains('w3-show')) {
myDropdown.classList.remove('w3-show');
}
}
}
</script>
</body>
</html>
现在是实际的邮件处理脚本：
<?php
# spam protection
if (isset($_POST["website"]) && $_POST["website"] == "") {
if (isset($_SERVER['SCRIPT_NAME']) && strpos($_SERVER['SCRIPT_NAME'], 'inc.php')) exit;
// remove escape characters from POST array
if (get_magic_quotes_gpc()) {
function stripslashes_deep($value) {
$value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value);
return $value;
}
$_POST = array_map('stripslashes_deep', $_POST);
}
// create empty array for any missing fields
$missing = array();
// assume that there is nothing suspect
$suspect = false;
// create a pattern to locate suspect phrases
$pattern = '/Content-Type:|Bcc:|CC:/i';
// function to check for suspect phrases
function isSuspect($val, $pattern, &$suspect) {
// if the variable is an array, loop through each element
// and pass it recursively back to the same function
if (is_array($val)) {
foreach ($val as $item) {
isSuspect($item, $pattern, $suspect);
}
}
else {
// if one of the suspect phrases is found, set Boolean to true
if (preg_match($pattern, $val)) {
$suspect = true;
}
}
}
// check the $_POST array and any subarrays for suspect content
isSuspect($_POST, $pattern, $suspect);
if ($suspect ) {
$mailSent = false;
unset($missing);
}
else {
// process the $_POST variables
foreach ($_POST as $key => $value) {
// assign to temporary variable and strip whitespace if not an array
$temp = is_array($value) ? $value : trim($value);
// if empty and required, add to $missing array
if (empty($temp) && in_array($key, $required)) {
array_push($missing, $key);
}
// otherwise, assign to a variable of the same name as $key
elseif (in_array($key, $expected)) {
${$key} = $temp;
}
}
}
// validate the email address
if (!empty($email)) {
// regex to identify illegal characters in email address
$checkEmail = '/^[^@]+@[^\s\r\n\'";,@%]+$/';
// reject the email address if it doesn't match
if (!preg_match($checkEmail, $email)) {
$suspect = true;
$mailSent = false;
unset($missing);
}
}
// validate the comments
// regex to identify html links
$linkOne = false;
$checkCommentsLinks = '/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i'; // '/(http:\/\/|www)/';
if(preg_match($checkCommentsLinks, stripcslashes($question))){
$linkOne = true;
$suspect = true;
$mailSent = false;
unset($missing);
}
//validate comments against email addresses
$linkTwo = false;
$checkCommentsEmail = '/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/';
if(preg_match($checkCommentsEmail, stripcslashes($question))){
$linkTwo = true;
$suspect = true;
$mailSent = false;
unset($missing);
}
//look for links in comments
$linkThree = false;
if(preg_match('/http|www/i',$question)) {
$linkThree = true;
$suspect = true;
$mailSent = false;
unset($missing);
}
// go ahead only if not suspect and all required fields OK
if (!$suspect && empty($missing)) {
// initialize the $message variable
$message = '';
// loop through the $expected array
foreach($expected as $item) {
// assign the value of the current item to $val
if (isset(${$item})) {
$val = ${$item};
}
// if it has no value, assign 'Not Selected'
else {
$val = 'Not selected';
}
// if an array, expand as comma-separated string
if (is_array($val)) {
$val = implode(', ', $val);
}
// add label and value to the message body
$message .= ucfirst($item).": $val\n\n";
}
// limit line length
$message = wordwrap($message, 70);
// create Reply-To header
if (!empty($email)) {
$headers .= "\r\nReply-To: $email";
}
// send it
$mailSent = mail($to, $subject, $message, $headers);
if ($mailSent) {
// $missing is no longer needed if the email is sent, so unset it
unset($missing);
}
}
}
else {
http_response_code(400);
exit;
}
?>
最近我真正反对的是最新的垃圾邮件实际上是在发送一封主题行（不知道主题从哪里来）以“SPAM”开头的电子邮件。任何帮助将不胜感激！感谢阅读！
没有防止垃圾邮件的未来证据，您已经使用三种方法来防止它
可以添加
在你的
isSuspect$suspect//...
foreach ($val as $item) {
isSuspect($item, $pattern, $suspect);
if ($suspect)
break;
}
//...
生成表格时节省时间
sessionsession_start();
$_SESSION['form_time'] = time();
提交表格时检查时间：
session_start();
$time_limit = 30;
$suspect = false;
if (isset($_SESSION['form_time']) && is_numeric($_SESSION['form_time'])) {
$seconds_passed = time() - $_SESSION['form_time'];
if ($seconds_passed < $time_limit) {
$suspect = true;
}
} else {
$suspect = true;
}
注意： 如果用户打开多个表单，值将被覆盖，将使用最后一个值，之前打开的表单将失效
这只是基本方法，有很多方法可以实现，30秒只是我选择的任意值