PHP 使用endroid/qrcode 二维码生成， GD库生成分享海报

1. 使用composer安装 endroid/qrcode

github地址：https://github.com/endroid/qr-code

composer require endroid/qrcode

2. 安装 php安装gd扩展

gd扩展参考手册：https://www.php.net/manual/zh/book.image.php

<?php

namespace app\index\controller;

use Endroid\QrCode\QrCode;

class Poste

{

function __construct($imgFolder, $fontFolder) {

$this->imgFolder = $imgFolder;

$this->fontFolder = $fontFolder;

}

private $imgFolder;

private $fontFolder;

public function create($url, $userName, $title)

{

// 1 获取背景图尺寸

list($bg_w,$bg_h) = getimagesize($this->imgFolder."/bg.jpg");

// 2 创建画图

$img = @imagecreatetruecolor($bg_w,$bg_h);

// 3 填充画布背景颜色

$img_bg_color = imagecolorallocate($img,255,255,255);

imagefill($img,0,0,$img_bg_color);

// 4 将背景图填充到画布

$bg_img = $this->getImgReource($this->imgFolder."/bg.jpg");

imagecopyresized($img,$bg_img,0,0,0,0,$bg_w,$bg_h,$bg_w,$bg_h);

// 5 生成二维码， 填充用户二维码

$qecodeName = $this->generateQrcode($url);

$qrcode = $this->getImgReource($qecodeName);

// 获取二维码尺寸

list($qr_w,$qr_h) = getimagesize($qecodeName);

imagecopyresized($img,$qrcode,40,638,0,0,220,220,$qr_w,$qr_h);

// 6 填充用户图像

$user_img = $this->getImgReource($this->imgFolder."/head.png");

list($user_w,$user_h) = getimagesize($this->imgFolder."/head.png");

imagecopyresized($img,$user_img,40,380,0,0,130,130,$user_w,$user_h);

// 填空用户名

$font_color = ImageColorAllocate($img,0,0,0); //字体颜色

$font_ttf = $this->fontFolder. "/MSYHB.ttf";

$font_ttf2 = $this->fontFolder. "/MSYHL.ttc";

imagettftext($img,32,0,205,430,$font_color,$font_ttf,$userName);

// 7 设置标题

imagettftext($img,24,0,205,490,$font_color,$font_ttf2,$title);

// 8 保存图片

$posterName = $this->imgFolder."/".date("YmdHis", time()).$this->generateRandomString().".png";

imagepng($img,$posterName);

return $posterName;

}

private function generateQrcode($url)

{

$qrCode = new QrCode($url);

$qrCode->setSize(300);

$qrCode->setWriterByName('png');

$qrCode->setMargin(10);

$qrCode->setEncoding('UTF-8');

// $qrCode->setErrorCorrectionLevel(ErrorCorrectionLevel::HIGH());

$qrCode->setForegroundColor(['r' => 0, 'g' => 0, 'b' => 0, 'a' => 0]);

$qrCode->setBackgroundColor(['r' => 255, 'g' => 255, 'b' => 255, 'a' => 0]);

$qrCode->setLogoSize(150, 200);

$qrCode->setRoundBlockSize(true);

$qrCode->setValidateResult(false);

$qrCode->setWriterOptions(['exclude_xml_declaration' => true]);

print_r(gettype($qrCode->writeString()));

$qecodeName = $this->imgFolder."/".date("YmdHis", time()).$this->generateRandomString().".png"; // 2017-12-14 23:13:51

$qrCode->writeFile($qecodeName);

return $qecodeName;

}

private function generateRandomString($length = 10) {

$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

$randomString = '';

for ($i = 0; $i < $length; $i++) {

$randomString .= $characters[rand(0, strlen($characters) - 1)];

}

return $randomString;

}

/**

* 获取图像文件资源

* @param string $file

* @return resource

*/

protected function getImgReource($file){

$file_ext = pathinfo($file,PATHINFO_EXTENSION);

switch ($file_ext){

case 'jpg':

case 'jpeg':

$img_reources = @imagecreatefromjpeg($file);

break;

case 'png':

$img_reources = @imagecreatefrompng($file);

break;

case 'gif':

$img_reources = @imagecreatefromgif($file);

break;

}

return $img_reources;

}

}