Pixel2Life

#insert the .htaccess file to your site's parent directory (it's often public_html)

rewritecond %{http_referer} !^$   #check that previous page refers to requested one

rewritecond %{http_referer} !^http://([^.]*[.]*)?site.com/ [nc]   #if the referring page is yours...

rewritecond %{http_referer} !^http://(www.)?google.com/ [nc]   #...or Google stop processing the script.

rewriterule (.*.(png|gif|jpeg|jpg)) http://www.site.com/watermark.php?image=http://www.site.com/$1   #but if the previous conditions equal true, catch the name of the image that is being requested and replace it with the watermarked one.

<?php

 

 

    $font = "verdana.TTF";  // the font what is used for the watermark. must be in the same directory as the script.

    $text = "(c) site.com";  // text for the watermark.

    $font_size = 16;  // the size of text in points (pt).

 

    $size = imagettfbbox (   $font_size, 0, $font, $text   );  // find out dimensions of the specified text.

    $text_width = $size[2] + $size[0] + 8;  // calculating width...

    $text_height = $size[1] + $size[7];  // ...and height of the text.

 

 

    $ext = end (   explode (   ".", $_GET["image"]   )   );  // find out extension (or type) of the image, so we can use the right function

 

    switch (   $ext   )   {

 

        case "jpg":  // if the image is in jpg format...

            $image = imagecreatefromjpeg (   $_GET["image"]   ); break;  //...we use the function for including jpg images

        case "jpeg":  // ^^

            $image = imagecreatefromjpeg (   $_GET["image"]   ); break;

        case "png":  // and so on...

            $image = imagecreatefrompng (   $_GET["image"]   ); break;

        case "gif":

            $image = imagecreatefromgif (   $_GET["image"]   ); break;

 

    }

 

 

    $image_width = imagesx (   $image   );  // find out the width...

    $image_height = imagesy (   $image   );  //...and height of the image.

 

    $text_x = $image_width - $text_width;  // and then define the x....

    $text_y = $image_height - $text_height - 30;  //...and y coordinate for the text, so the text will be placed on the bottom right corner of the image.

 

    $shadow_x = $text_x + 2;  // move the shadow 2 pixels right.

    $shadow_y = $text_y + 2;  // same as above but this moves it down.

 

 

    imagettftext (   $image, $font_size, 0, $shadow_x, $shadow_y, imagecolorallocate (   $image, 0, 0, 0   ), $font, $text   );  // the text for the shadow is created first, so it stays on bottom and the real text goes over it.

    imagettftext (   $image, $font_size, 0, $text_x, $text_y, imagecolorallocate (   $image, 255, 195, 60   ), $font, $text   );  // create the "real" text for the watermark. in this example it is orange.

 

 

    header (   "Content-Type: image/png"   );  // set the content type header to image/png so it's not displayed in normal html.

 

    imagepng (   $image   );  // print out the image...

    imagedestroy (   $image   );  // and destroy it immediately.

 

 

 

?>