接上一篇phpword生成word文档，如有不明白的问题可以先查看上一篇文章
首先，生成PDF需要先生成word文档，而后通过word文档生成HTML文档，最后才可以通过HTML文档生成PDF文件，详细代码如下。
执行命令安装phpword：
composer require phpoffice/phpword将word转为HTML然后转为PDF的后端代码如下：
public function wordToPdf()
{
$order_id = request()->get('order_id');
$sale_order = SaleOrderModel::with(['customer'])->where('id',$order_id)->first();
$file_name= $sale_order['contract'];//此字段存储的是生成好的word的文件地址
$file = public_path('storage/'.$file_name);
$phpWord = IOFactory::load($file);
$html = IOFactory::createWriter($phpWord ,'HTML');
// 设置Dompdf
$dompdf = new Dompdf();
// 将Word文档内容转换为HTML
$html->save(storage_path('app/public/contract/'.$order_id.'.html'));
$html = file_get_contents(base_path().'/public/storage/contract/'.$order_id.'.html');
//这几步是因为复杂的HTML样式不被识别，所以将其替换掉
$css = <<<HTML
*{ font-family: simsun, DejaVu Sans, sans-serif;}
HTML;
$font = "font-family: '宋体';";
$style = "* {";
$style_new = "* { word-wrap: break-word;";
$search = '</style>';
$html = str_replace($search,$css.'</style>',$html);
$html = str_replace($font,'',$html);
$html = str_replace($style,$style_new,$html);
// 加载HTML到Dompdf
$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'portrait');
// file_put_contents($target, $dompdf->output());
// 渲染HTML为PDF
$dompdf->render();
$pdf_name = $sale_order->customer->name;
return $dompdf->stream($pdf_name);
}前端的页面样式（建议先查看上一篇文章PHP+laravel 生成word）：
{
"type": "link",
'body':'PDF下载',
"className" : "pdf_span span",
"href": "{{admin_url('sale-order/wordToPdf?order_id='.$order_id)}}",
"style": {
"margin-left": "80px",
"margin-top" : "5px",
"padding" : "3px 12px",
}
},其中需要使用字体文件，下载文字包地址
https://download.csdn.net/download/QiZong__BK/89482065?spm=1001.2014.3001.5503
这样就完成啦