PHP QR code generation library

<?php   
    class QRbitstream {
    
        public $data = array();
        
        //----------------------------------------------------------------------
        public function size()
        {
            return count($this->data);
        }
        
        //----------------------------------------------------------------------
        public function allocate($setLength)
        {
            $this->data = array_fill(0, $setLength, 0);
            return 0;
        }
    
        //----------------------------------------------------------------------
        public static function newFromNum($bits, $num)
        {
            $bstream = new QRbitstream();
            $bstream->allocate($bits);
            
            $mask = 1 << ($bits - 1);
            for($i=0; $i<$bits; $i++) {
                if($num & $mask) {
                    $bstream->data[$i] = 1;
                } else {
                    $bstream->data[$i] = 0;
                }
                $mask = $mask >> 1;
            }
            return $bstream;
        }

This QR code generation library is very easy to use. Of course, your PHP environment must enable GD2 support. This library provides a key png() method, in which the parameter $text indicates the generation of two-digit information text; the parameter $outfile indicates whether to output a QR code image file, the default is no; the parameter $level indicates the fault tolerance rate, that is, there is The covered areas can also be identified, which are L (QR_ECLEVEL_L, 7%), M (QR_ECLEVEL_M, 15%), Q (QR_ECLEVEL_Q, 25%), H (QR_ECLEVEL_H, 30%); the parameter $size indicates the size of the generated image, The default is 3; the parameter $margin indicates the spacing value of the blank area of ​​the border around the QR code; the parameter $saveandprint indicates whether to save the QR code and display it.

Related Article

PHP QR Code barcode and QR code generation class library

25Jul2016

PHP QR Code barcode and QR code generation class library

HP QR Code is a PHP QR code generation library

29Jul2016

:This article mainly introduces HP QR Code, a PHP QR code generation library. Students who are interested in PHP tutorials can refer to it.

Implement WeChat QR code generation in PHP

13May2023

With the development and popularization of mobile Internet, WeChat has become an indispensable part of people's life and work. In order to meet the needs of users, WeChat continues to launch new functions, the most important of which is WeChat payment. In order to use WeChat payment, you must have a reliable QR code generation function. This article will introduce how to generate WeChat QR code in PHP. First of all, we need to make it clear that there are two ways to generate WeChat QR codes, one is a permanent QR code and the other is a temporary QR code. The permanent QR code is only available when the user

PHP QR code generation code

25Jul2016

PHP QR code generation code

php QR code generation

08Aug2016

:This article mainly introduces PHP QR code generation. Students who are interested in PHP tutorials can refer to it.

php QR code generation

03Sep2019

It is quite difficult to generate QR codes using PHP language. You can use phpqrcode, a ready-made class file and PHP QR code generation class library, to easily generate QR codes.

See all articles