Php 添加简单的数学验证码
我用这个[教程][1]做了验证码 [1] 当前位置但在我看来它还没有完成。 我做了代码，但我可以发送电子邮件，即使我把错误的答案。我觉得我必须在php文件中编写额外的代码，但我不知道在哪里。非常感谢你的帮助Php 添加简单的数学验证码,php,Php,我用这个[教程][1]做了验证码 [1] 当前位置但在我看来它还没有完成。 我做了代码，但我可以发送电子邮件，即使我把错误的答案。我觉得我必须在php文件中编写额外的代码，但我不知道在哪里。非常感谢你的帮助 <div class="modal-body"> <form class="contact" name="contact"> <label class="label" for="name"&
<div class="modal-body">
<form class="contact" name="contact">
<label class="label" for="name">Имя</label><br>
<input type="text" name="name" class="input-xlarge"><br>
<label class="label" for="email">E-mail</label><br>
<input type="email" name="email" class="input-xlarge"><br>
<label class="label" for="message">Сообщение</label><br>
<textarea name="message" class="input-xlarge"></textarea>
</form>
</div>
<div class="modal-footer">
<p>2 + 3 =</p>
<input type="text" name="captcha" />
<input class="btn btn-warning" type="submit" value="Отправить" id="submit">
<a href="#" class="btn btn-danger" data-dismiss="modal">Закрыть</a>
<?php
$myemail = '';
if (isset($_POST['name'])) {
$name = strip_tags($_POST['name']);
$email = strip_tags($_POST['email']);
$message = strip_tags($_POST['message']);
$captcha = check_input($_POST['captcha']);
echo "<span class=\"alert alert-success\" >Сообщение отправлено</span><br><br>";
if (!preg_match("/5/", $captcha))
{
show_error("Check your math, Dude");
}
$to = $myemail;
$email_subject = "Contact form submission: $name";
$email_body = "You have received a new message. ".
" Here are the details:\n Name: $name \n ".
"Email: $email\n Message \n $message";
$headers = "From: $myemail\n";
$headers .= "Reply-To: $email";
mail($to,$email_subject,$email_body,$headers);
}?>
Бц
电子邮件
Сбббббббб
2+3=
$\u POST['email']$\u POST['captcha']$myemail = "";
if(isset($_POST['name'])){ // check if a form is submitted
if(empty(trim($_POST['name'])) || empty(trim($_POST['message'])) || empty(trim($_POST['email'])) || empty(trim($_POST['captcha'])) ){ // check if values are not empty
echo "Please fill in all the required fields.";
}else if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)){ // check email
echo "Please give a real e-mail address.";
}else if(!preg_match("/5/", $_POST['captcha'])){ // the code provided by your script
echo "Get your math right, dude!";
}else{ // all fields seem to be ok
// sanitize input using htmlspecialchars(), see http://stackoverflow.com/a/5788361/1319187
$name = htmlspecialchars($_POST['email']);
$email = $_POST['email']; // email doesn't need to be sanitized since it's been filtered
$message = htmlspecialchars($_POST['message']);
//Send the mail
$to = $myemail;
$email_subject = "Contact form submission: $name";
$email_body = "You have received a new message. ".
" Here are the details:\n Name: $name \n ".
"Email: $email\n Message \n $message";
$headers = "From: $myemail\n";
$headers .= "Reply-To: $email";
if(mail($to,$email_subject,$email_body,$headers)){
echo "Succes! Your mail has been sent!";
}else{
echo "Something went wrong with the sending of a mail.";
}
}
}
我也不知道
check\u input（）$\u POST['captcha']='5'电子邮件filter\u var（$\u POST['email'，filter\u VALIDATE\u email）trim（POST