从字节数组输出PHP中的PDF [英] Output a PDF in PHP from a byte array

问题描述

我从WCF服务获取一个字节数组，生成PDF并将其转换为字节数组。我需要能够获得字节数组，并使用PHP或Javascript（或jQuery）采取该字节数组，并将其转换回可下载的PDF。我希望在Javascript中使用一个解决方案，但是PHP也能正常工作。

I am getting a byte array from a WCF service that generated the PDF and converted it to a byte array. I need to able to get the byte array and using either PHP or Javascript (or jQuery) take that byte array and convert it back to a downloadable PDF. I would prefer a solution in Javascript, but PHP would work fine too.

我用来获取PDF的代码是：

The code I'm using to get the PDF is:

<?php
    $userPDF = $_POST['username'];
    $passPDF = $_POST['password'];
    $idPDF = 'MO-N007175A';

    //PDF Function
    $data = array("id" => $idPDF, "username" => $userPDF, "password" => $passPDF);                                                                    
    $data_string = json_encode($data);                                                
    $ch = curl_init('http://********.com/******/v1/DealPdf');                                                                      

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                                                                     
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);                                                                 
    curl_setopt($ch, CURLOPT_VERBOSE, 1 );
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);                                                                
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

    $result = curl_exec($ch);
    var_dump($result);
?>

var_dump（$ result）;

string（1053285）[37,80,68,70,45,49,46,54,10,37,211,244,204,225， ...

数组持续一段时间...所以我只提供了一小部分用于示例目的。

The array goes on for a while... so I only provided a small portion for example purposes.

我从哪里开始从这个数组中获取PDF？

Where do I start on getting a PDF out of this array?

EDIT
- WCF服务返回一个实际的PDF，只是一个字节数组。我需要保存这个字节数组作为PDF在客户端机器上我使用了fwrite等等，但我必须缺少的东西，因为我看不到工作。

EDIT To clarify - The WCF Service IS returning an actual PDF, just in a byte array. I need to save this byte array as a PDF on the clients machine. I have used fwrite and so forth, but I must be missing something because I dont see it working.

此外 - 如果我使用fwrite，它会输出文件？
EDIT $ b

Also - If I do use fwrite, where does it output the file? EDIT

推荐答案

我不得不做同样的事情。对我来说，我是生成PDF服务器端，但想要发送一堆其他数据到AJAX响应中的客户端下面是我结束了的JavaScript。 Blob 和saveAs 方法是相当新的技术，所以你可能想要（像我一样）得到每个polyfill，链接到上面。 p>

I had to do the same thing. For me, I was generating the PDF server-side, but wanted to send it down with a bunch of other data to the client in an AJAX response. Here's the JavaScript that I ended up with. The Blob and saveAs methods are rather new technologies, so you might want to (as I did) get the polyfills for each of them, linked to above.

// Convert the Base64 string back to text.
var byteString = atob(data.reportBase64Bytes);

// Convert that text into a byte array.
var ab = new ArrayBuffer(byteString.length);
var ia = new Uint8Array(ab);
for (var i = 0; i < byteString.length; i++) {
    ia[i] = byteString.charCodeAt(i);
}

// Blob for saving.
var blob = new Blob([ia], { type: "application/pdf" });

// Tell the browser to save as report.pdf.
saveAs(blob, "report.pdf");

// Alternatively, you could redirect to the blob to open it in the browser.
//document.location.href = window.URL.createObjectURL(blob);

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