Generate QR codes using Google API tool:infographics

Google Developer provides the generation of QR code API, the following describes how to produce two-dimensional code, and related parameter settings.

Official Address: Https://google-developers.appspot.com/chart/infographics/docs/qr_codes

Here is an example code that uses the production QR code provided by Google Chart tools:

<?php//uses Google API tool to generate two-dimensional code function CREATEQR ($chlData, $chsWidth = $chsHeight, $choe = "UTF-8", $chld = AR Ray (' L ', 4)) {$base = ' https://chart.googleapis.com/chart? '; $cht = ' qr '; $get = $base. ' Cht= '. $cht. ' &chs= '. $chsWidth. ' X '. $chsHeight. ' &chl= '. $chlData. ' &choe= '. $choe. ' &chld= '. $CHLD [0]. ' | '. $CHLD [1];return $get;} $url = CREATEQR ($chlData = UrlEncode (' http://aiilive.blog.51cto.com ')); Echo ' 

The resulting QR code such as:

650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M02/47/DE/wKioL1QBtEWhr0xeAAAnwOICark031.jpg " Title= "Goole.chart.api-qr.png" alt= "wkiol1qbtewhr0xeaaanwoicark031.jpg"/>

can view Official Documents , the following is a simple description of the parameters that need to be set in the API process.

Parameters	Necessity	Description
Cht=qr	True	Specify a QR code
chs=< Width>x	Two-dimensional code picture maximum size
chl=< Data>	true	Data URL encoded
choe=< Output_encoding>	false	The encoding format of the data in the QR code, the main available formats are: utf-8 ( Default), Shift-jis,iso-8858-1
Chld=<error_correction_level>|<margin>	False	Error_correction_level: The level of fault tolerance is four levels, respectively: L,m,q,h representation Margin: The resulting two-dimensional code picture and border margin, but here does not have to be like the expression, but the line. Default 4

We're using Google's API to generate QR codes that don't take into account the amount and version of the code, which Google did. There are two connections, detailed information about the QR and standard instructions.

http://www.qrcode.com/zh/about/version.html

http://www.qrcode.com/en/codes/

From or code.com

650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M01/47/DC/wKiom1QBu0rgrx2aAAMI7cWpilw085.jpg " Title= "Qr.png" width= "680" height= "262" border= "0" hspace= "0" vspace= "0" style= "width:680px;height:262px;" alt= " Wkiom1qbu0rgrx2aaami7cwpilw085.jpg "/>

Google also provides a library of QR Code reader classes:Zerbar cross Zxing. Github: https://github.com/zxing/zxing

my other article about using zxing to generate two-dimensional code: http://aiilive.blog.51cto.com/1925756/1352004

This article from "Mustang Red" blog, declined reprint!

Generate QR codes using Google API tool:infographics