PHP获取base64解码xml数组并将其编码为pdf

Question

我需要转换XML数组（包含base64解码）并将其编码为PDF。

这是数组：

<response>
<xmlArray>
<blabla>TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2NpbmcgZWxpdC4gTnVuYyB2ZW5lbmF0aXMsIGp
1c3RvIHV0IGF1Y3RvciBzZW1wZXIsIHB1cnVzIGxlY3R1cyBlbGVtZW50dW0gbGliZXJvLCBhYyBwZWxsZW50ZXNxdWUgYW50ZSBqdXN0b
yBldCB0dXJwaXMuIE51bmMgYmliZW5kdW0gZWdlc3RhcyBkb2xvciB2b2x1dHBhdCBlZ2VzdGFzLiBTdXNwZW5kaXNzZSBkYXBpYnVzIHN
lbSBvZGlvLCBpbiBmYXVjaWJ1cyBsZWN0dXMgcHVsdmluYXIgdml0YWUuIE5hbSBtYXR0aXMgZXVpc21vZCBhdWd1ZSwgZWdldCBmaW5pY
nVzIGxlbyBoZW5kcmVyaXQgbmVjLiBDbGFzcyBhcHRlbnQgdGFjaXRpIHNvY2lvc3F1IGFkIGxpdG9yYSB0b3JxdWVudCBwZXIgY29udWJ
pYSBub3N0cmEsIHBlciBpbmNlcHRvcyBoaW1lbmFlb3MuIE51bmMgaWQgbnVuYyBsZWN0dXMuIFBlbGxlbnRlc3F1ZSBsYWN1cyB1cm5hL
CB2aXZlcnJhIGNvbnZhbGxpcyBlZmZpY2l0dXIgdmVsLCBhbGlxdWFtIHNpdCBhbWV0IGRpYW0uIEluIGEgYWxpcXVldCBtYXNzYS4gU2V
udCwgdGVtcHVzIGhlbmRyZXJpdCBlbmltIGZhdWNpYnVzLiBEb25lYyBtYXR0aXMgZWxpdCBub24gbWFzc2EgaW50ZXJkdW0gZmF1Y2lid
XMuIEFlbmVhbiBub24gbWF1cmlzIGluIHVybmEgbWFsZXN1YWRhIGx1Y3R1cy4=
</blabla>
</xmlArray>
</response>

我到目前为止的尝试是

<?php 

// 1st. convert xml array; get the blabla array information

$blabla2 = $xml->xmlArray->blabla;

// remove CR, new lines and whitespace on blabla2

$blabla3 = str_replace(array("\n", "\t", "\r"), '', $blabla2);


// 2nd. encode it to PDF

header('Content-type: application/pdf');

$blabla4 = base64_decode($blabla3 );

echo $blabla4 ;
?>

结果是pdf，但不是我预期的方式，因为它在pdf上显示了这一行：

%PDF-1.410obj<</Title(þÿ)/Creator(þÿwkhtmltopdf0.12.2.4) ...

您介意告诉我如何正确显示PDF格式吗？

非常感谢！