See how PHP generates a barcode (1) _ PHP Tutorial

See how PHP generates a barcode (1 ). A while ago, I was working on a seller's coupon function and needed a bar code. so I sorted out the information again. 1. what is a bar code? Baidu Encyclopedia definition: barcode (barcode) is the function of creating a merchant coupon for a period before the width is reached. it needs to use the bar code, so it will reorganize the information.

1. what is a bar code?

Baidu Encyclopedia definition: barcode is a graphic identifier used to express a set of information by sorting multiple black bars and white spaces with different widths according to certain encoding rules. A common bar code is a parallel line of a black stripe (abbreviated as a bar) and a white stripe (blank for short) with a large difference in reflectivity. In daily life, the bar code can mark the producing country, manufacturer, product name, production date, book classification number, mail place start and end, category, date and many other information. For details about the barcode encoding format, refer

For the printed coupon, the merchant needs to use the validators to read the barcode to obtain its validity.

2. how to generate a barcode?

First, find powerful open-source materials.

Bytes. 1. what is a bar code? Baidu Encyclopedia definition: bar code (barcode) is not to be width...