お問い合わせフォームに画像確認コードを追加しました。画像は正常に表示されますが、正しく入力しても画像確認コードが間違っていることがわかります。私はそれが私のcontactform.phpの問題だと信じています
これが私のHTMLフォームです：
<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>
送信先のcontactform.phpは次のとおりです。
<?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>';
}
}
?>
そして最後に..これが検証画像を生成するverification.phpです：
<?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);
?>
何か案は？