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Membuat Captcha dengan PHP

Cara membuat Captcha dengan PHP

Berikut script PHP nya :

<?php
session_start();
ob_start();
ini_set('error_reporting', E_NONE);

if(isset($_POST["submitted"]) && $_POST["submitted"] == 1)
{
//Read POST request params into global vars
$to_email = "emailanda@juniawan.com"; // ganti alamat email anda
$from_fullname = trim(strip_tags($_POST['fullname']));
$from_email = trim(strip_tags($_POST['email']));
$email_subject = trim(strip_tags($_POST['subject']));
$email_message = nl2br(trim(strip_tags($_POST['message'])));
$security_code = trim(strip_tags($_POST['vpb_captcha_code']));

//Set up the email headers
$headers = "From: $from_fullname <$from_email>\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
$headers .= "Message-ID: <".time().rand(1,1000)."@".$_SERVER['SERVER_NAME'].">". "\r\n";

if($from_fullname == "")
{
$submission_status = '<div class="vpb_info" align="left">Masukan nama lengkap anda</div>';
}
elseif($from_email == "")
{
$submission_status = '<div class="vpb_info" align="left">Tolong masukan alamat email anda</div>';
}
elseif(!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})quot;, $from_email))
{
$submission_status = '<div class="vpb_info" align="left">Maaf, alamat email yang anda masukan tidak valid</div>';
}
elseif($email_subject == "")
{
$submission_status = '<div class="vpb_info" align="left">Tolong masukan Nomor Telp anda</div>';
}
elseif($email_message == "")
{
$submission_status = '<div class="vpb_info" align="left">Tolong tuliskan pesan anda</div>';
}
elseif($security_code == "")
{
$submission_status = '<div class="vpb_info" align="left">Tolong masukan security code yang tertera</div>';
}
elseif(!isset($_SESSION['vpb_captcha_code']))
{
$submission_status = '<div class="vpb_info" align="left">Maaf, security code yang anda masukan salah..!! Coba ulangi.</div>';
}
else
{
if(empty($_SESSION['vpb_captcha_code']) || strcasecmp($_SESSION['vpb_captcha_code'], $_POST['vpb_captcha_code']) != 0)
{
//Note: the captcha code is compared case insensitively. If you want case sensitive match, update the check above to strcmp()

$submission_status = '<div class="vpb_info" align="left">Maaf, security code yang anda masukan salah..!! Coba ulangi.</div>';
}
else
{
$vasplus_mailer_delivers_greatly = @mail($to_email, $email_subject, $email_message, $headers);

if ($vasplus_mailer_delivers_greatly)
{
//Displays the success message when email message is sent
$submission_status = "<div align='left' class='vpb_success'>Selamat $from_fullname, pesan anda telah sukses terkirim ke kami<br>Kami akan segera menghubungi anda, Terimakasih</div>";
}
else
{
//Displays an error message when email sending fails
$submission_status = "<div align='left' class='vpb_info'>Maaf, untuk sementara pesan anda tidak dapat terkirim<br>Tolong ulangi beberapa saat lagi, Terimakasih</div>";
}
}
}
}
?>



Berikut script html nya :

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>juniawan89.blogspot.com</title>

<!-- This is the CSS file for this tutorial -->
<link href="css/style.css" rel="stylesheet" type="text/css">

<!-- This function refreshes the security or captcha code when clicked on the refresh link -->
<script type="text/javascript">
function vpb_refresh_aptcha()
{
return document.getElementById("vpb_captcha_code").value="",document.getElementById("vpb_captcha_code").focus(),document.images['captchaimg'].src = document.images['captchaimg'].src.substring(0,document.images['captchaimg'].src.lastIndexOf("?"))+"?rand="+Math.random()*1000;
}
</script>

</head>
<body>
<br clear="all">
<center>

<div class="vasplus_programming_blog_wrapper" align="left">

<center>
<div style="font-family:Verdana, Geneva, sans-serif; font-size:16px; float:center; width:180px;" align="left">Juniawan89.blogspot.com </div>
<br clear="all" /><br clear="all" />

<div style="width:430px; font-family:Verdana, Geneva, sans-serif; font-size:12px;padding:10px;" align="left">

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" enctype="multipart/form-data">

<div style="width:100px;padding-top:10px;float:left;font-family:Verdana, Geneva, sans-serif; font-size:11px;" align="left">Your Fullname:</div>
<div style="width:300px; float:left;" align="left"><input type="text" id="fullname" name="fullname" value="<?php echo strip_tags($_POST["fullname"]); ?>" class="vpb_input_fields"></div><br clear="all"><br clear="all">

<div style="width:100px;padding-top:10px;float:left;font-family:Verdana, Geneva, sans-serif; font-size:11px;" align="left">Email Address:</div>
<div style="width:300px; float:left;" align="left"><input type="text" id="email" name="email" value="<?php echo strip_tags($_POST["email"]); ?>" class="vpb_input_fields"></div><br clear="all"><br clear="all">

<div style="width:100px;padding-top:10px;float:left;font-family:Verdana, Geneva, sans-serif; font-size:11px;" align="left">Nomor Telp/HP:</div>
<div style="width:300px; float:left;" align="left"><input type="text" id="subject" name="subject" value="<?php echo strip_tags($_POST["subject"]); ?>" class="vpb_input_fields"></div><br clear="all"><br clear="all">

<div style="width:100px;padding-top:10px;float:left;font-family:Verdana, Geneva, sans-serif; font-size:11px;" align="left">Your Message:</div>
<div style="width:300px; float:left;" align="left"><textarea id="message" name="message" style="width:280px; height:80px; padding:10px;" class="vpb_input_fields"><?php echo strip_tags($_POST["message"]); ?></textarea></div><br clear="all"><br clear="all">

<div style="width:100px;padding-top:10px;float:left;font-family:Verdana, Geneva, sans-serif; font-size:11px;" align="left">Security Code:</div>
<div style="width:300px; float:left;" align="left">
<div class="vpb_captcha_wrappers"><input type="text" id="vpb_captcha_code" name="vpb_captcha_code" style="border-bottom: solid 2px #cbcbcb;" class="vpb_input_fields"></div></div><br clear="all">
<div style="width:100px; float:left;" align="left">&nbsp;</div>
<div style="width:300px; float:left;" align="left"><div class="vpb_captcha_wrapper"><img src="vasplusCaptcha.php?rand=<?php echo rand(); ?>" id='captchaimg' ></div><br clear="all">
<div style=" padding-top:5px;" align="left"><font style="font-family:Verdana, Geneva, sans-serif; font-size:11px;">TIdak bisa membaca kode? <a href="javascript:void(0);" style="text-decoration:none;" onClick="vpb_refresh_aptcha();">Refresh</a></font></div>

</div>
<br clear="all"><br clear="all">

<div style="width:420px; float:left;" align="left"><?php echo $submission_status; ?></div><!-- Display success or error messages -->
<div style="width:100px; float:left;" align="left">&nbsp;</div>
<div style="width:300px; float:left;" align="left">
<input type="hidden" id="submitted" name="submitted" value="1">
<input type="submit" class="vpb_general_button"  value="Submit">
</div>

</form>
</div>
<br clear="all">
</center>
</div>

<p style="margin-bottom:200px;">&nbsp;</p>
</center>
</body>
</html>

Download code lengkap disini

Selesai...
Semoga Bermanfaat....

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