Masking email addresses by making them images?

I would like to stop spambots from harvesting email addresses on my website by making the emails images in php. I found a script on another site but can’t seem to get it to work. Here’s the script:

Code:

<?PHP
 
// Set your string somehow
$string = 'your@example.com';
 
// Set font size
$font_size = 4;
 
// Create image width dependant on width of the string
$width  = imagefontwidth($font_size)*strlen($string);
// Set height to that of the font
$height = imagefontheight($font_size);
// Create the image pallette
$img = imagecreate($width,$height);
// Grey background
$bg    = imagecolorallocate($img, 25, 25, 25);
// White font color
$color = imagecolorallocate($img, 255, 255, 255);
// Length of the string
$len = strlen($string);
// Y-coordinate of character, X changes, Y is static
$ypos = 0;
// Loop through the string
for($i=0;$i<$len;$i++){
    // Position of the character horizontally
    $xpos = $i * imagefontwidth($font_size);
    // Draw character
    imagechar($img, $font_size, $xpos, $ypos, $string, $color);
    // Remove character from string
    $string = substr($string, 1);   
   
}
// Return the image
header("Content-Type: image/gif");
imagegif($img);
// Remove image 
imagedestroy($img);
 
?>


Does anyone have any experience with this?

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