PHP Two-dimensional code generation, php_php tutorial

PHP Two-dimensional code generation, PHP

This article introduces two methods of generating QR code using PHP.
(1) Using Google to generate two-dimensional code open Interface, the code is as follows:

/**  * Google API qr code generation "QRCode can store up to 4,296 alphanumeric types of arbitrary text, you can view the QR code data format"  * @param string $data QR Code contains information, can be numbers, characters, Binary information, Chinese characters. Data types cannot be mixed and data must be UTF-8 url-encoded. If you need to pass more than 2K bytes of information, use the Post method  * @param int $widhtHeight to generate dimension settings for the QR code  * @param String $EC _level Optional error correction level, QR code supports four levels of error correction, used to recover lost, misread, blurred, data.  *       L-Default: can identify loss of 7% of data  *       M can identify loss of 15% of data  *       Q can identify lost 25% of the data  *       H can identify lost 30% of the data  * @ param int $margin The distance generated by the two-dimensional code from the picture border  */function Generateqrfromgoogle ($data, $widhtHeight = ' _level= ', $EC ' L ', $ margin= ' 0 ') {  $url =urlencode ($data);  

How to use:

The Post method implements a way to request the Google API to generate a two-dimensional code:

function QRCode ($width, $height, $string) {  $post _data=array ();  $post _data[' cht ']= ' QR ';  $post _data[' CHS ']= $width. " X ". $height;  $post _data[' CHL ']= $string;  $post _data[' Choe ']= "UTF-8";  $url = "Http://chart.apis.google.com/chart";  $data _array=array ();  foreach ($post _data as $key = + $value) {   $data _array[]= $key. ' = '. $value;  }  $data =implode ("&", $data _array);  $ch =curl_init ();  curl_setopt ($ch, Curlopt_post, 1);  curl_setopt ($ch, Curlopt_header, 0);  curl_setopt ($ch, Curlopt_url, $url);   curl_setopt ($ch, Curlopt_postfields, $data);  curl_setopt ($ch, Curlopt_returntransfer, 1);  $result =curl_exec ($ch);  echo ""; Note that you do not write the header  

How to use:

Of course, the resulting picture is the same as above.

(2) using the PHP QR code class library to generate two-dimensional code
Note using this class library must first download the class library package, download the address:
Address: http://phpqrcode.sourceforge.net/
There are many examples of downloaded compression packages, which can be researched by ourselves, and a simple use case is given below (the meaning of the parameters is the same as above):

<?php include "./phpqrcode.php"; $data = ' All rights reserved: Http://www.bkjia.com '; $errorCorrectionLevel = "L"; $matrixPointSize = "4"; QRCode::p ng ($data, False, $errorCorrectionLevel, $matrixPointSize);

The above is the whole content of this article, I hope that you can master the PHP production of two-dimensional code to be helpful.

http://www.bkjia.com/PHPjc/1062501.html www.bkjia.com true http://www.bkjia.com/PHPjc/1062501.html techarticle php qr code generation, PHP this article introduces two ways to generate QR codes using PHP. (1) Using Google to generate two-dimensional code open Interface, the code is as follows:/** * Google api qr code generation ...

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