[Demo] generate two-dimensional code and bar code

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Contrast bar codes and 2D codes

Only one-dimensional barcode in one direction (usually the horizontal direction) expressing information, any information in the vertical direction is not expressed, which is usually a certain height in order to facilitate alignment of the reader. Two-dimensional space in the bar code information is stored in the horizontal and vertical directions, called two-dimensional barcode (dimensional bar code). Compared to one-dimensional bar codes, two-dimensional code is described in more complex data, such as images, web links and so on.

One-dimensional bar code information into the application can improve the speed and reduce the error rate, but one-dimensional bar codes, there are some shortcomings:

● data capacity is small: about 30 characters

● can only contain letters and numbers

● barcode relatively large in size (space utilization is low)

● can not read the bar code is damaged after (partial destruction may still be able to read)

Compared with the two-dimensional bar code with the one-dimensional bar code obvious advantages, summarized in the following areas:

● greater data capacity

● beyond the limits alphanumeric

● Barcode relatively small size

● Resistant to damage the ability

Bar code and two-dimensional code application scenarios

Barcode application scenarios

Bar code information can be marked goods producer, manufacturer, product name, date of production, book classification number, e-mail starting and ending location, category, date, etc., which have been in many areas of commodity circulation, library management, postal management, banking systems, etc. a wide range of applications

Scenario two-dimensional code

● access to information (business cards, maps, WIFI password, data)

● Website Jump (Jump to microblogging, mobile site, site)

● advertising push (user scan code, browse the merchant directly push video, audio advertising)

● Phone electricity supplier (user scan code, phone directly under the shopping list)

● security traceability (user scan code to see the producer; while the background can obtain final consumption)

● Promotions (user scan code, download e-coupons, sweepstakes)

● members of management (members access to electronic information on the user's mobile phone, VIP service)

● mobile payment (two-dimensional code scanning merchandise, through a bank or third-party payment channels provided by the mobile terminal to complete the payment)

Classification of barcodes and 2D codes

Classification barcode

Common follows, details see Wikipedia barcode

● EAN, UPC code

● ISBN code (bar code books)

● 39 yards (39 alphanumeric code is the first code system)

Classification of two-dimensional code

Common follows, details see Wikipedia two-dimensional bar code

● PDF417 two-dimensional bar code

● Maxicode two-dimensional bar code

● QR Code

Examples show

Address: http://m.54php.cn/demo/scan_code can also phone to scan the following figure

scan_code

Blog using the product

Library book details page to join ISBN bar code display, easy to use mobile phones Taobao and micro-channel scan code

Phone Taobao scan code results

Renderings

600

Related to the core code

<?php
$barcode = '9787115281487';
$url = 'http://m.vincentguo.cn';
$email = 'mailto:[email protected]';//邮件二维码内容

//名片二维码内容
$vcard = 'BEGIN:VCARD
VERSION:3.0
FN:郭威
NICKNAME:编程浪子
TITLE:PHP研发工程师
TEL;TYPE=work:181****9661
TEL:181****9661
EMAIL:www.54php.cn
END:VCARD';
$wifi = 'WIFI:T:WPA;S:ChuangJia-2F-B;P:123456789';//wifi二维码内容
$sms = 'smsto:8613774355074:你好，二维码发短信';//短信二维码内容
$tel = "tel:13774355074";//电话二维码内容
?>

Resources

barcodephp

Project Address: http://www.barcodebakery.com/

yii2-qrcode

Project Address: https://github.com/2amigos/yii2-qrcode-helper

Official website address: http://www.2amigos.us/open-source/details/qrcode-helper

Scanning APP

Download: http://www.wochacha.com/

Original Address: [Demo] generate two-dimensional code and bar code
labels: two-dimensional code barcode Barcode qrcode wifi SMS business cards

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Reproduced in: https: //my.oschina.net/54php/blog/757186