thinkphp5 dimensional code generating composer

Extend into the folder

composer require endroid/qrcode

2. The two-dimensional code generated as services

QrcodeServer.phpcode show as below:

? < PHP
 / * * 
 * PhpStorm the Created by. 
 * The User: cdjyj21 
 * a Date: 2018/9/4 
 * Time: 11:57 
 * / 

namespace App \ Services; 

// add just introduced the composer installed inside the class are automatically loaded class

　　use think\facade\App;
　　require_once App::getRootPath().'/extend/vendor/autoload.php';


Endroid use \ QrCode \ ErrorCorrectionLevel; 
use Endroid \ QrCode \ LabelAlignment; 
use Endroid \ QrCode \ QrCode; 

class QrcodeServer 
{ 
    protected $ _qr;
     protected $ _encoding = ' UTF-. 8 ' ;               // coding type 
    protected $ _size = 300 ;                   // two-dimensional code size 
    protected $ _logo = false ;                 // need logo with a two-dimensional code 
    protected $ _logo_url = '' ;                    // logo image path 
    protected_logo_size = $ 80 ;                    // logo size 
    protected $ = _title to false ;                 // whether two-dimensional code title 
    protected $ _title_content = '' ;                    // title content 
    protected $ _generate = ' the display ' ;             // Display- displayed directly writefile- file write 
    protected $ _file_name = ' ./static/qrcode ' ;     // write the file path 
    const MARGIN = 10 ;                        // two-dimensional code with respect to the contents from the outside throughout the image 
    const WRITE_NAME = ' PNG ' ;                      // write the file name suffix 
    const FOREGROUND_COLOR color = [ ' R & lt ' => 0 , ' G ' => 0 , ' B ' => 0 , ' A ' => 0 ];           // foreground 
    const BACKGROUND_COLOR = [ ' R & lt ' => 255 , ' G ' => 255, 'b' => 255, 'a' => 0];    // 背景色

    public function __construct($config) {
        isset($config['generate'])      &&  $this->_generate        = $config['generate'];
        isset($config['encoding'])      &&  $this->_encoding        = $config['encoding'];
        isset($config['size'])          &&  $this->_size            = $config['size'];
        isset($config['logo'])          &&  $this->_logo            = $config['logo'];
        isset($config['logo_url'])      &&  $this->_logo_url        = $config['logo_url'];
        isset($config['logo_size'])     &&  $this->_logo_size       = $config['logo_size'];
        isset($config['title'])         &&  $this->_title           = $config['title'];
        isset($config['title_content']) &&  $this->_title_content   = $config['title_content'];
        isset($config['file_name'])     &&  $this->_file_name       = $config['file_name'];

    public* /
     * @return Array | Page INPUT
     * Generates two-dimensional code*/ *
    }
     * @param $content //需要写入的内容
     
     function createServer($content) {
        $this->_qr = new QrCode($content);
        $this->_qr->setSize($this->_size);
        $this->_qr->setWriterByName(self::WRITE_NAME);
        $this->_qr->setMargin(self::MARGIN);
        $this->_qr->setEncoding($this->_encoding);
        $this->_qr->setErrorCorrectionLevel(ErrorCorrectionLevel::HIGH);   // 容错率
        $this->_qr->setForegroundColor(self::FOREGROUND_COLOR);
        $this->_qr->setBackgroundColor(self::BACKGROUND_COLOR);
        // 是否需要title
        if ($this->_title) {
            $this->_qr->setLabel($this->_title_content, 16, null, LabelAlignment::CENTER);
        }
        // 是否需要logo
        if ($this->_logo) {
            $this->_qr->setLogoPath($this->_logo_url);
            $this->_qr->setLogoWidth($this->_logo_size);
        }

        $this->_qr->setValidateResult(false);

        if ($this->_generate == 'display') {
            // 展示二维码
            // 前端调用 例：<img src="http://localhost/qr.php?url=base64_url_string">
            header('Content-Type: ' . $this->_qr->getContentType());
            return $this->_qr->writeString();
        } else if ($this->_generate == 'writefile') {
            // 写入文件
            $file_name = $this->_file_name;
            return $this->generateImg($file_name);
        } else {
            return ['success' => false, 'message' => 'the generate type not found', 'data' => ''];
        }
    }

    /**
     * 生成文件
     * @param $file_name //目录文件 例: /tmp
     * @return array
     */
    public function generateImg($file_name) {
        $file_path = $file_name . DIRECTORY_SEPARATOR . uniqid() . '.' . self::WRITE_NAME;

        if (!file_exists($file_name)) {
            mkdir($file_name, 0777, true);
        }

        try {
            $this->_qr->writeFile($file_path);
            $data = [
                'url' => $file_path,
                'ext' => self::WRITE_NAME,
            ];
            return ['success' => true, 'message' => 'write qrimg success', 'data' => $data];
        } catch (\Exception $e) {
            return ['success' => false, 'message' => $e->getMessage(), 'data' => ''];
        }
    }

}

3. Call

Example:

? < PHP
 / * * 
 * PhpStorm the Created by. 
 * The User: cdjyj21 
 * a Date: 2018/9/4 
 * Time: 11:57 
 * / 

namespace App \ the Test \ the Controller; 

use App \ Services \ QrcodeServer; 

class qrcode 
{ 
    / * * 
     * direct output to generate a two-dimensional code + dimensional code image file 
     * / 
    public function Create () {
         // custom two-dimensional code arranged 
        $ config = [
             ' title '          => to true ,
             ' title_content ' => ' Test ' ,
            ' Logo '           => to true ,
             ' logo_url '       => ' ./logo.png ' ,
             ' logo_size '      => 80 , 
        ]; 

        // directly outputs 
        $ qr_url = ' http://www.baidu.com?id= ' . RAND ( 1000 , 9999 ); 

        $ qr_code = new new QrcodeServer ($ config); 
        $ qr_img = $ qr_code-> the createServer ($ qr_url); 
        echo $ qr_img; 

        // write the file
        qr_url = $ ' This test is a two-dimensional code ' ; 
        $ file_name = ' ./static/qrcode ' ;   // save the definition directory 

        $ config [ ' file_name ' ] = $ file_name; 
        $ config [ ' Generate ' ] = ' WriteFile ' ; 

        $ qr_code = new new QrcodeServer ($ config); 
        $ RS = $ qr_code-> the createServer ($ qr_url); 
        print_r ($ RS); 

        Exit; 
    } 
}

In the browser to directly access create()method, will direct the output of two-dimensional code, and it will generate a two-dimensional code images saved in a custom directory. Results are as follows:

This two-dimensional code that direct output of how it applies to projects, usually directly written in html <img> tag, for example:

<img src = " HTTP: // localhost: 8080 / projecttest / qrtest the above mentioned id = 1234? "   alt = " This is a two-dimensional code " />

Here a list of a few parameters I understand, are also considered himself to be a note of it.

parameter name	description	Examples
setText	Set Text	https://www.baidu.com
setSize	Set the size of the two-dimensional code, there should be a square two-dimensional code, so is equivalent to the length and width	400
setMargin	Set two-dimensional code Margins	10
setForegroundColor	Set the foreground color, RGB color	array('r' => 0, 'g' => 0, 'b' => 0, 'a' => 0)
setBackgroundColor	Set the background color, RGB color	array('r' => 0, 'g' => 0, 'b' => 0, 'a' => 0)
setEncoding	Setting coding	Utfa8
setErrorCorrectionLevel	Set error level (low / medium / quartile / high)	high
setLogoPath	Set logo path	logo.png
setLogoWidth	Set logo size	50
setLabel	Settings tab	test
setLabelFontSize	Settings tab font size	16
setLabelFontPath	Settings tab font path	null
setLabelAlignment	Settings tab alignment (left / center / right)	center
setLabelMargin	设置标签边距	array('t' => 10,'r' => 20,'b' => 10,'l' => 30)
setWriterRegistry
setWriter
setWriterByName	写入文件的后缀名	png
setWriterByPath
setWriterByExtension
setValidateResult
writeString
writeDataUri
writeFile	写入文件	test.png

参考原文： https://www.jianshu.com/p/9b933907acd6

thinkphp5 dimensional code generating composer

3. Call

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