使用dompdf创建多个PDF文件 [英] Creating multiple PDF files with dompdf
问题描述
我正在编写一个检查数据库并返回客户的每一行的脚本，该客户的帐户开始日期在特定日期.如果客户是在指定的日期创建的，那么客户行将传递给我的函数，以便根据数据库中客户的信息创建PDF.
I am writing a script that checks a database and returns each row of a customer that account start date is on a certain date. If the customer was created on the specified date then the customer row is passed to my function to create a PDF out of the customer's information in the database.
问题
我想为每个客户创建一个PDF的唯一方法是遍历数据并创建PDF.这样做时我有一个问题.
The only way I have thought up to create one PDF for each customer is to loop through the data and create the PDF. When doing so I have one problem.
1..仅创建第一个用户的PDF.与第二种无关.
1. Only the first user's PDF is created. Nothing happens pertaining to the second.
无法流式传输PDF:标头已发送
Unable to stream PDF: headers already sent
显示在浏览器中，并且第一个PDF下载.但是出于测试目的，应该在数据库中创建两个客户.我将数据回显到浏览器，并且两个客户都出现了.因此，我知道数据存在并且在运行时存在.
shows in the browser and the first PDF downloads. But for testing purposes there are two customers in the database that should be created. I echo out the data to the browser and both customers do show up. So I know the data exist and is there at run time.
示例
// create instance of customer's that need to be created
$a = new SelectTempOne;
// obtain response from customers in database that have met timing requirement
$response = $a->selectUserForOne();
// loop through each row in the results and handle then pass to the pdf creation string
foreach($response as $i => $row) {
// statically typing template string to render email address of user
$temp1 = '
<!DOCTYPE html>
<html>
<head>
<title>Template 1</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" media="screen" href="pdf-templates/temp1/temp1.css" />
</head>
<body>
<div id="pdf_header">
<table>
<tr>
<td>'.$response[$i]['email'].'</td>
</tr>
</table>
</div>
</body>
</html>
';
// pass html to dompdf object
$dompdf->loadHtml($temp1);
// set option for the paper size and orientation
$dompdf->setPaper('A4', 'letter');
// Render the HTML as PDF
$dompdf->render();
//save the file to the server
$output = $dompdf->output();
file_put_contents('pdf/'.$response[$i]['email'].'.pdf', $output);
// Output the generated PDF to Browser
$dompdf->stream();
exit;
} // end of the for loop
?>
这行是我添加客户电子邮件的地方，
This line is where I add the customer's email,
<td>'.$response[$i]['email'].'</td>
问题
当我遍历数据库返回的行时，我需要做些什么才能创建动态数量的PDF?
What do I need to do to be able to create a dynamic amount of PDF as I loop through the rows returned from the database?
*更新*
致命错误:未捕获的Dompdf \ Exception:未找到块级父级.不好.在/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/Positioner/Inline.php:45堆栈跟踪:#0/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(872):Dompdf \ Positioner \ Inline-> position(Object(Dompdf \ FrameDecorator \ Inline))
Fatal error: Uncaught Dompdf\Exception: No block-level parent found. Not good. in /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/Positioner/Inline.php:45 Stack trace: #0 /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(872): Dompdf\Positioner\Inline->position(Object(Dompdf\FrameDecorator\Inline))
Dompdf \ FrameDecorator \ AbstractFrameDecorator-> position()#2/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(893):Dompdf \ FrameReflower \ Inline-> reflow(NULL)#3/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameReflower/Page.php(141):Dompdf \ FrameDecorator \ AbstractFrameDecorator-> reflow()#4/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(893):Dompdf \ FrameReflower \ Page-> reflow(NULL)#5/Users/wuno/Dropbox/google/devop中/Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/Positioner/Inline.php在第45行
Dompdf\FrameDecorator\AbstractFrameDecorator->position() #2 /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(893): Dompdf\FrameReflower\Inline->reflow(NULL) #3 /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameReflower/Page.php(141): Dompdf\FrameDecorator\AbstractFrameDecorator->reflow() #4 /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/FrameDecorator/AbstractFrameDecorator.php(893): Dompdf\FrameReflower\Page->reflow(NULL) #5 /Users/wuno/Dropbox/google/devop in /Users/wuno/Dropbox/google/devops/htdocs/tracker/login/dompdf/src/Positioner/Inline.php on line 45
推荐答案
Web浏览器通过请求文档来工作.您不能期望能够为用户提供多个文档.您可以一次调用 $ dompdf-> stream(); .您的选择:动态创建带有单个链接的列表页面，创建多页PDF或将PDF压缩在一起.
A web browser works by requesting a document. You can't expect to be able to serve multiple documents to a user. You get to call $dompdf->stream(); once and that's it. Your options: dynamically create a listing page with individual links, create a multi-page PDF, or zip the PDFs together.
好的，根据您的评论，您实际上并不想显示PDF.另外，我再看一遍，您的循环中有一个exit语句.这不会运行多次.另外，最好使用当您的代码中包含大量文本时，heredoc字符串，所以我就这样做了.
ok, based on your comment, you don't actually want to display the PDF. In addition, I took another look and you've got an exit statement in your loop. That's not going to run more than once. Also, it's a good idea to use heredoc strings when you have large blocks of text in your code, so I've done so.
<?php
// create instance of customer's that need to be created
$a = new SelectTempOne;
// obtain response from customers in database that have met timing requirement
$response = $a->selectUserForOne();
// loop through each row in the results and handle then pass to the pdf creation string
foreach($response as $i => $row) {
// statically typing template string to render email address of user
$temp1 = <<< HTML
<!DOCTYPE html>
<html>
<head>
<title>Template 1</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" media="screen" href="pdf-templates/temp1/temp1.css" />
</head>
<body>
<div id="pdf_header">
<table>
<tr>
<td>$row[email]</td>
</tr>
</table>
</div>
</body>
</html>
HTML;
// pass html to dompdf object
$dompdf->loadHtml($temp1);
// set option for the paper size and orientation
$dompdf->setPaper('A4', 'letter');
// Render the HTML as PDF
$dompdf->render();
//save the file to the server
$output = $dompdf->output();
file_put_contents("pdf/$row[email].pdf", $output);
} // end of the for loop
?>
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