HTML 转 PDF 或 图片

knp-snappy 安装
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composer require knplabs/knp-snappy
WINDOWS 系统安装扩展包 wkhtmltopdf-windows
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composer require wemersonjanuario/wkhtmltopdf-windows

#二进制文件路径(32位和64位)
vendor\wemersonjanuario\wkhtmltopdf-windows\bin
LINUX 系统扩展包
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#i386 的二进制文件
composer require h4cc/wkhtmltopdf-i386
composer require h4cc/wkhtmltoimage-i386

#amd64
composer require h4cc/wkhtmltopdf-amd64
composer require h4cc/wkhtmltoimage-amd64
实现代码
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<?php
use Knp\Snappy\Pdf;
use Knp\Snappy\Image;

require 'vendor/autoload.php';

$baseDir = __DIR__;
$pdfBinaryFile = $baseDir . '/vendor/wemersonjanuario/wkhtmltopdf-windows/bin/64bit/wkhtmltopdf.exe';
$imageBinaryFile = $baseDir . '/vendor/wemersonjanuario/wkhtmltopdf-windows/bin/64bit/wkhtmltoimage.exe';

if (strpos(PHP_OS, 'Linux') !== false) {
$h4ccPath = $baseDir . '/vendor/h4cc/';
$systemBit = exec('getconf LONG_BIT');
if ($systemBit == '32') {
$pdfBinaryFile = $h4ccPath . 'wkhtmltopdf-i386/bin/wkhtmltopdf-i386';
$imageBinaryFile = $h4ccPath . 'wkhtmltoimage-i386/bin/wkhtmltoimage-i386';
} else {
$pdfBinaryFile = $h4ccPath . 'wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64';
$imageBinaryFile = $h4ccPath . 'wkhtmltoimage-amd64/bin/wkhtmltoimage-amd64';
}
}

$html = <<<HTML
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
</head>
<body>
<p style="font-family: 'Microsoft YaHei'">Hello World, 你好 世界!</p>
</body>
</html>
HTML;

// HTML 转 PDF
$pdfSnappy = new Pdf($pdfBinaryFile);
$pdfSnappy->generateFromHtml($html, $baseDir . '/test.pdf', [], true);

// HTML 转 图片
$imageSnappy = new Image($imageBinaryFile);
$imageSnappy->generateFromHtml($html, $baseDir . '/test.png', [
'width' => 100,
'height' => 100,
'quality' => 100
], true);

// 生成海报(海报背景 + 二维码 + LOGO + 文字描述)
$backgroundImage = $baseDir . '/bg.jpg';
$qrcodeImage = $baseDir . '/qrcode.png';
$logoImage = $baseDir . '/logo.png';
$title = "海报标题AAAABBBBCCCCDDDD";
$outputImage = $baseDir . '/poster.png';

list ($width, $height) = getimagesize($backgroundImage);
$snappy = new Image($imageBinaryFile);
$snappy->generateFromHtml(generateHtml($backgroundImage, $qrcodeImage, $logoImage, $title), $outputImage, [
'width' => $width,
'height' => $height,
'quality' => 100
], true);

/**
* 生成HTML
*
* @param string $backgroundImage
* @param string $qrcodeImage
* @param string $logoImage
* @param string $title
*
* @return string
*/
function generateHtml($backgroundImage, $qrcodeImage, $logoImage, $title)
{
$html = <<<HTML
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title></title>
<style>
body, html {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
font-family: "Microsoft YaHei"
}
.container {
position: relative;
display: flex;
width: 100%;
height: 100%;
}
.img-bg {
position: absolute;
top: 0;
left: 0;
width: 100%;
}
.content {
position: relative;
z-index: 999;
left: 25%;
top: 37.5%;
width: 50%;
height: 25%;
border-radius: 7px;
}
.img-qrcode {
width: 100%;
height: 100%;
}
.img-logo {
position: absolute;
top: 40%;
left: 40%;
width: 20%;
height: 20%;
}
.title {
width: 90%;
margin: 2px auto;
overflow: hidden;
font-size: 20px;
display: -webkit-box;
-webkit-line-clamp: 2;
text-overflow: ellipsis;
-webkit-box-orient: vertical;
text-align: center;
}
</style>
</head>
<body>
<div class="container">
<img src="{$backgroundImage}" class="img-bg">
<div class="content">
<img src="{$qrcodeImage}" class="img-qrcode">
<img src="{$logoImage}" class="img-logo">
<div class="title">{$title}</div>
</div>
</div>
</body>
</html>
HTML;

return $html;
}

Linux 字体安装(生成PDF或图片时乱码或方块)

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1. /usr/share/fonts 新建目录 windows
2. 上传字体文件至 windows 目录下
3. 建立字体索引信息
cd /usr/share/fonts/windows
mkfontscale
mkfontdir
4. 更新字体缓存
fc-cache

#查看系统中的字体
fc-list

#查看系统中的中文字体
fc-list :lang=zh
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