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Barcode can generate barcode graphics supporting different bar formatting standards. It supports the standards EAN-13, EAN-8, UPC-A, UPC-E, ISBN, 2 of 5 interleaved, postnet, codabar, code128, code39 and code93.
The barcode graphics can be generated as images in the PNG, GIF or JPEG formats. The generated images can be served as the current script output or stored in a file.
This was Developed by Harish Chauhan and was found at (site no longer exists):
https://www.phpkode.com/scripts/tag/barcode/
https://www.phpkode.com/scripts/item/barcode/
It requires arialbd.ttf font
Try it at https://www.emogic.com/mine/barcode