Advanced Contact Forum

[Prophet.K 0]

Okay so people that want a contact form in their website, but keep getting spammed my bots here is your solution. This script might be a little advanced, but it stops spammers. They way it stop spammers is that it has a box where you enter the numbers. I think it's called a captcha.

########################### contact.php ##########################<?php@session_start();if(isset($_POST['submit'])) {if(($_POST['security_code'] == $_SESSION['security_code']) && (!empty($_SESSION['security_code'])) ) {$to = "YOUR_MAIL_HERE";$subject = "Form submission";$name_field = $_POST['name'];$email_field = $_POST['email'];$message = $_POST['message'];$body = "From: $name_field\n E-Mail: $email_field\n Message:\n $message";mail($to, $subject, $body);echo "Email was great success! I will email you back soon.";unset($_SESSION['security_code']);}else {unset($_SESSION['security_code']);echo "Incorrect captcha code.";}}?><p><form method="POST" action=""><p>Your Name:<br /><input type="text" name="name" size="19"><br>Your Email:<br /><input type="text" name="email" size="19"><br>Your Message:<br /><textarea rows="9" name="message" cols="30"></textarea></p><p><img src="captcha.php" /> <br>Type the letters from the image above into this box:<br />(This prevents Bots from sending me spam.)<br /><input id="security_code" name="security_code" type="text" /><br><input type="submit" value="Submit" name="submit"></p></form>############################ captcha.php ############################<?phpsession_start();class CaptchaSecurityImages {var $font = 'monofont.ttf';function generateCode($characters) {/* list all possible characters, similar looking characters and vowels have been removed */$possible = '23456789bcdfghjkmnpqrstvwxyz';$code = '';$i = 0;while ($i < $characters) {$code .= substr($possible, mt_rand(0, strlen($possible)-1), 1);$i++;}return $code;}function CaptchaSecurityImages($width='120',$height='40',$characters='6') {$code = $this->generateCode($characters);/* font size will be 75% of the image height */$font_size = $height * 0.75;$image = imagecreate($width, $height) or die('Cannot initialize new GD image stream');/* set the colours */$background_color = imagecolorallocate($image, 255, 255, 255);$text_color = imagecolorallocate($image, 20, 40, 100);$noise_color = imagecolorallocate($image, 100, 120, 180);/* generate random dots in background */for( $i=0; $i<($width*$height)/3; $i++ ) {imagefilledellipse($image, mt_rand(0,$width), mt_rand(0,$height), 1, 1, $noise_color);}/* generate random lines in background */for( $i=0; $i<($width*$height)/150; $i++ ) {imageline($image, mt_rand(0,$width), mt_rand(0,$height), mt_rand(0,$width), mt_rand(0,$height), $noise_color);}/* create textbox and add text */$textbox = imagettfbbox($font_size, 0, $this->font, $code) or die('Error in imagettfbbox function');$x = ($width - $textbox[4])/2;$y = ($height - $textbox[5])/2;imagettftext($image, $font_size, 0, $x, $y, $text_color, $this->font , $code) or die('Error in imagettftext function');/* output captcha image to browser */header('Content-Type: image/jpeg');imagejpeg($image);imagedestroy($image);$_SESSION['security_code'] = $code;}}$width = isset($_GET['width']) && $_GET['height'] < 600 ? $_GET['width'] : '120';$height = isset($_GET['height']) && $_GET['height'] < 200 ? $_GET['height'] : '40';$characters = isset($_GET['characters']) && $_GET['characters'] > 2 ? $_GET['characters'] : '6';$captcha = new CaptchaSecurityImages($width,$height,$characters);?>

You will need to make some other PHP pages that are: | captcha.php | contact.php |