Barcode หุหุ - อยากจะทราบวิธีที่นำตัวเลข ตั้งแต่ 0-9 มา Hashing

<?
echo "<img src=MyResize/image.png>";
$images = ImageCreate(300,200);
$color = ImageColorAllocate($images,255,0,0);
$photo = ImageColorAllocate($images,0,0,0);
ImageRectangle($images, 0, 0, 299, 199, $photo);

$text = 'My Name Is Win';
$font = 'ANGSAZ.TTF';

$white = ImageColorAllocate($images, 255, 255, 255);
$blue = ImageColorAllocate($images, 0, 0, 255);
ImagettfText($images, 20, 0, 11, 21, $blue, $font, $text);

ImagePng($images,"MyResize/image.png");
ImageDestroy($images);
?>