corz distro machine.. download/php/imaging/secure-email-image.php


<?php //  ۞// text{ encoding:utf-8; bom:no; linebreaks:unix; tabs:4; }
                                 $secure_email_img['version'] = '0.1';
/*

    simple secure email image

    displays your email address as an image, which should prevent
    harvesters from stealing it, and feeding it spam.

    To use:

        simply insert this as an image wherever you would put your email
        address, e.g..

            Send me an email, here: <img src="/path/to/this-script.php" alt="my addy" style="vertical-align:bottom;border;0"/>

    ;o)

*/


// prefs..
//

$secure_email_img['address'] = 'zroc@corz.org';

// text size
// 1-5
$secure_email_img['text_size'] = 5;

// border around the text. in pixels..
//
$secure_email_img['border'] = 1;

// background color..
$secure_email_img['background'] = '#fff7d1';

// text color..
$secure_email_img['text_color'] = '000000';

//
// end prefs.


// okay, let's go..
//

// transform user preferences..
//
$secure_email_img['background'] = hex2dec($secure_email_img['background']);
$secure_email_img['text_color'] = hex2dec($secure_email_img['text_color']);

$secure_email_img['img_width'] =  (imagefontwidth($secure_email_img['text_size']) * strlen($secure_email_img['address']))
                                                                                        + ($secure_email_img['border'] * 2);

$secure_email_img['img_height'] =  imagefontheight ($secure_email_img['text_size']) + ($secure_email_img['border'] * 2);

// open image and lay email text on it..
$secure_email_img['img'] = imagecreate($secure_email_img['img_width'], $secure_email_img['img_height'] );
$secure_email_img['bg'] = imagecolorallocate($secure_email_img['img'], $secure_email_img['background'][0], $secure_email_img['background'][1], $secure_email_img['background'][2]); // email_img['bg']
$secure_email_img['txtcol'] = imagecolorallocate($secure_email_img['img'], $secure_email_img['text_color'][0], $secure_email_img['text_color'][1], $secure_email_img['text_color'][2]); // email_img['bg']

imagestring($secure_email_img['img'], $secure_email_img['text_size'], $secure_email_img['border'],
                                $secure_email_img['border'], $secure_email_img['address'], $secure_email_img['txtcol']);

// send the image
header("Content-type: image/jpeg");
imagejpeg($secure_email_img['img']);
imagedestroy($secure_email_img['img']);

/*
function hex2dec()
convert an HTML #hex colour to decimal colour levels..    */
function hex2dec($rgb) {
    if (substr($rgb, 0, 1) == "#") {
        $rgb = substr($rgb, 1);
    }
    $r = hexdec(substr($rgb, 0, 2));
    $g = hexdec(substr($rgb, 2, 2));
    $b = hexdec(substr($rgb, 4, 2));
return array($r, $g, $b);
}/*
end function hex2dec()    */

?>