...It allows you to generate and print receipts with basic formatting, cutting, and barcodes on a compatible printer. The library was developed to add drop-in support for receipt printing to any PHP app, including web-based point-of-sale (POS) applications. Many thermal receipt printers support ESC/POS to some degree. This library is designed for use with the composer PHP dependency manager. To make use of this driver, your server (where PHP is installed) must be able to communicate with your printer. Start by generating a simple receipt and sending it to your printer using the command-line.