大家好，我已在联系表单中添加了图像验证码。它成功显示了图像，但它告诉我图像验证码是错误的，即使我输入正确。我相信这是我的contactform.php中的问题
这是我的 HTML 表单：
<form id="ajax-contact-form" action="javascript:alert('success!');">
<label>Name:*</label><INPUT class="textbox" type="text" name="name" value=""><br />
<label>E-Mail:*</label><INPUT class="textbox" type="text" name="email" value=""><br />
<label>Telephone:</label><INPUT class="textbox" type="text" name="Telephone" value="" /><br />
<INPUT class="textbox" type="hidden" name="subject" value="Contact Form" >
<label>Message:*</label><TEXTAREA class="textbox" NAME="message" ROWS="5" COLS="25"> </TEXTAREA><br />
<tr>
<label>Image Verification:*</label>
<input type="text" name="verify" style="width:200px;" /><img src="verification.php?<?php echo rand(0,9999);?>" alt="Help us avoid spam! Please type the image text in the box" width="50" height="24" align="absbottom" />
<label> </label><INPUT class="button" type="submit" name="submit" value="Send Message">
</form>
这是它发送到的contactform.php：
<?php
/*
Credits: Bit Repository
URL: http://www.bitrepository.com/
*/
include 'config.php';
error_reporting (E_ALL ^ E_NOTICE);
$post = (!empty($_POST)) ? true : false;
if($post)
{
include 'functions.php';
$name = stripslashes($_POST['name']);
$email = trim($_POST['email']);
$telephone = stripslashes($_POST['telephone']);
$subject = stripslashes($_POST['subject']);
$message = stripslashes($_POST['message']);
$verify = stripslashes($_POST['verify']);
$error = '';
// Check name
if(!$name)
{
$error .= 'Please enter your name.<br />';
}
// Check email
if(!$email)
{
$error .= 'Please enter an e-mail address.<br />';
}
if($email && !ValidateEmail($email))
{
$error .= 'Please enter a valid e-mail address.<br />';
}
// Check message (length)
if(!$message || strlen($message) < 15)
{
$error .= "Please enter your message. It should have at least 15 characters.<br />";
}
// Check Verification code
if(md5($verify).'098f6bcd4621d373cade4e832627b4f6' != $_cookie['contact_verify'])
{
$error .= "Image Verification failed.<br />";
}
//Send the Name, Email, Telephone, and Message in a formated version.
$email_message = "The following message was sent to you in your contact form on domain.com\n\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "Name: ".clean_string($name)."\n";
$email_message .= "Email: ".clean_string($email)."\n";
$email_message .= "Telephone: ".clean_string($telephone)."\n";
$email_message .= "Message: ".clean_string($message)."\n";
if(!$error)
{
$mail = mail(WEBMASTER_EMAIL, $subject, $email_message,
"From: ".$name." <".$email.">\r\n"
."Reply-To: ".$email."\r\n"
."X-Mailer: PHP/" . phpversion());
if($mail)
{
echo 'OK';
}
}
else
{
echo '<div class="notification_error">'.$error.'</div>';
}
}
?>
最后.. 这里是生成验证图像的verification.php：
<?php
//Declare in the header what kind of file this is
header('Content-type: image/jpeg');
//A nice small image that's to the point
$width = 50;
$height = 24;
//Here we create the image with the sizes declared above and save it to a variable my_image
$my_image = imagecreatetruecolor($width, $height);
//Let's give our image a background color. White sound ok to everyone?
imagefill($my_image, 0, 0, 0xFFFFFF);
//Now we're going to add some noise to the image by placing pixels randomly all over the image
for ($c = 0; $c < 40; $c++){
$x = rand(0,$width-1);
$y = rand(0,$height-1);
imagesetpixel($my_image, $x, $y, 0x000000);
}
$x = rand(1,10);
$y = rand(1,10);
$rand_string = rand(1000,9999);
imagestring($my_image, 5, $x, $y, $rand_string, 0x000000);
/*
We're going to store a ****** in the user's browser so we can call to it
later and confirm they entered the correct verification. The
"md5 rand string" can be anything you want. It's just our personal
code to be added to the end of the captcha value stored in the ******
as an encrypted string
*/
setcookie('contact_verify',(md5($rand_string).'098f6bcd4621d373cade4e832627b4f6'));
imagejpeg($my_image);
imagedestroy($my_image);
?>
有任何想法吗？