Сделать из номера телефона картинку и вывести на сайте

<?php
            //height and width of the captch image
            $width = 180;
            $height = 30;
            //phone
            $phone="+7 (800) 000 0000";
            //create the image resource 
            $im = imagecreatetruecolor($width, $height);
            $bg = imagecolorallocate($im, 230, 80, 0); //background color
            $fg = imagecolorallocate($im, 255, 255, 255);//text color
            //fill the image resource with the bg color
            imagefill($im, 0, 0, $bg);
            imagestring($im, 5, 10, 8,  $phone, $fg);//imagestring 

            //tell the browser that this is an image
            header("Cache-Control: no-cache, must-revalidate");
            header('Content-type: image/png');
            //generate the png image
            imagepng($im);
            //destroy the image
            imagedestroy($im);
?>