The pdf417gen command can be used to generate a barcode from commandline. It takes the input either as an argument or from stdin. The bar code size can be customized by defining the number of columns ...

Output to PNG, GIF, JPEG, or SVG. Generates UPC-A, UPC-E, EAN-13, EAN-8, Code 39, Code 93, Code 128, Codabar, ITF, QR Code, and Data Matrix. include 'barcode.php ...