I have plenty of ppt and pptx files that I am trying to convert to pdf using PHP. Basing on PHPOffice I have able to convert xlsx or xls to pdf, when it comes to ppt or pptx I am facing difculities as I am assuing its not as much reliable in that sense in comparision to PHPSpreadsheet as its PHPPresentation/Writer directory is very limited and is not rich as PHPSpreadsheet.
So I tried to use MPDF or Dompdf to help overcome those limitations of PHPPresentation library came with the below code utilizing imagick as well.
$objReader = PresentationIOFactory::createReader('PowerPoint2007');
$objPHPPresentation = $objReader->load($pf);
// Create a new Imagick object for image manipulation
$imagick = new \Imagick();
// Loop through each slide and convert it to an image
$slideCount = $objPHPPresentation->getSlideCount();
for ($i = 0; $i < $slideCount; $i++) {
$oSlide = $objPHPPresentation->getSlide($i);
$oDrawing = new Drawing\Gd();
$oDrawing->setRenderingFunction(Drawing\Gd::RENDERING_PNG);
$oDrawing->setImageResource($oSlide->render());
$oDrawing->setSize($oSlide->getExtent()->getWidth(), $oSlide->getExtent()->getHeight());
$oDrawing->setMimeType(Drawing\Gd::MIMETYPE_DEFAULT);
$imageString = $oDrawing->getContents();
// Add the image to the Imagick object
$imagick->readImageBlob($imageString);
}
// Create a new mPDF object
$mpdf = new MpdfLib([
'mode' => 'utf-8',
'format' => [$objPHPPresentation->getLayout()->getDocument()->getDocumentPart()->getExtent()->getWidth(), $objPHPPresentation->getLayout()->getDocument()->getDocumentPart()->getExtent()->getHeight()]
]);
// Add the slide images to the mPDF object
$imagick->resetIterator();
foreach ($imagick as $index => $slideImage) {
// Output slide image as a base64-encoded data URI
$dataUri = 'data:image/png;base64,' . base64_encode($slideImage->getImageBlob());
// Add the slide image to the mPDF object
$mpdf->AddPage();
$mpdf->WriteHTML('<img src="' . $dataUri . '" />');
}
// Save the PDF
$mpdf->Output($outputFilePath, 'F');
echo "PowerPoint file has been converted to PDF.";
The main issue that I am facing now is reading pptx and ppt files as I get an error that ppt file is not compatible any ideas how to overcome this issue?
As when I tried pptx with creating a 'PowerPoint2007' reader as can be seen in the above code I got the below error, any idea what I am doing wrong?
PPTX File Load Error:
Fatal error: Uncaught TypeError:PhpOffice\PhpPresentation\Reader\PowerPoint2007::loadShapeRichText(): Argument #3 ($oSlide) must be of type PhpOffice\PhpPresentation\Slide\AbstractSlide, PhpOffice\PhpPresentation\Slide\Note given, called in C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php on line 1375 and defined in C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php:888
Stack trace:
#0 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php(1375): PhpOffice\PhpPresentation\Reader\PowerPoint2007->loadShapeRichText(Object(PhpOffice\Common\XMLReader), Object(DOMElement), Object(PhpOffice\PhpPresentation\Slide\Note))
#1 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php(755): PhpOffice\PhpPresentation\Reader\PowerPoint2007->loadSlideShapes(Object(PhpOffice\PhpPresentation\Slide\Note), Object(DOMNodeList), Object(PhpOffice\Common\XMLReader))
#2 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php(369): PhpOffice\PhpPresentation\Reader\PowerPoint2007->loadSlideNote('notesSlide1.xml', Object(PhpOffice\PhpPresentation\Slide))
#3 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php(169): PhpOffice\PhpPresentation\Reader\PowerPoint2007->loadSlides('<?xml version="...')
#4 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php(136): PhpOffice\PhpPresentation\Reader\PowerPoint2007->loadFile('C:/xampp/htdocs...')
#5 C:\xampp\htdocs\a\create_thumbnail.php(70): PhpOffice\PhpPresentation\Reader\PowerPoint2007->load('C:/xampp/htdocs...')
#6 C:\xampp\htdocs\a\create_thumbnail.php(142): getThumbnail('../uploads/pptx...', 'Results Discuss...', 'C:/xampp/htdocs...', '../uploads/tmp/', 'pptx', '126', Object(mysqli))
#7 {main}
thrown in C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint2007.php on line 888
PPT File Load Error:
Fatal error: Uncaught TypeError:
PhpOffice\Common\Microsoft\OLERead::getStream(): Argument #1 ($stream) must be of type int, null given, called in C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint97.php on line 487 and defined in C:\xampp\htdocs\vendor\phpoffice\common\src\Common\Microsoft\OLERead.php:203
Stack trace:
#0 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint97.php(487): PhpOffice\Common\Microsoft\OLERead->getStream(NULL)
#1 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint97.php(454): PhpOffice\PhpPresentation\Reader\PowerPoint97->loadOLE()
#2 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\Reader\PowerPoint97.php(442): PhpOffice\PhpPresentation\Reader\PowerPoint97->loadFile()
#3 C:\xampp\htdocs\vendor\phpoffice\phppresentation\src\PhpPresentation\IOFactory.php(73): PhpOffice\PhpPresentation\Reader\PowerPoint97->load('C:/xampp/htdocs...')
#4 C:\xampp\htdocs\a\create_thumbnail.php(112): PhpOffice\PhpPresentation\IOFactory::load('C:/xampp/htdocs...')
#5 C:\xampp\htdocs\a\create_thumbnail.php(177): getThumbnail('../uploads/ppt/...', 'Architecture_xx...', 'C:/xampp/htdocs...', '../uploads/tmp/', 'ppt', '139', Object(mysqli))
#6 {main}
thrown in C:\xampp\htdocs\vendor\phpoffice\common\src\Common\Microsoft\OLERead.php on line 203
I have been struggling with this for some time, I would appreciate your help and if there is any workaround (considering that the PHP script shall be running on a shared-hosting).
UPDATE (Partial Fix - PPTX):
I was able to partially fix the issue, the part concerning loading PPTX files through the below changes (Reference Issue #710):
vendor/phpoffice/phppresentation/src/PhpPresentation/Reader/PowerPoint2007.php
protected function loadShapeRichText(XMLReader $document, DOMElement $node, AbstractSlide $oSlide): void
{
if (!$document->elementExists('p:txBody/a:p/a:r', $node)) {
return;
}
replace to
protected function loadShapeRichText(XMLReader $document, DOMElement $node, $oSlide): void
{
if (!$document->elementExists('p:txBody/a:p/a:r', $node) || !$oSlide instanceof AbstractSlide) {
return;
}
in vendor/phpoffice/phppresentation/src/PhpPresentation/Style/Border.php
public function setLineWidth(int $pValue = 1): self
{
$this->lineWidth = $pValue;
}
replace to
public function setLineWidth($pValue = 1): self
{
$this->lineWidth = (int) $pValue;
}
Still struggling with the PPT files part as per the error shared earlier, kindly advise.
Appreciate your time, thanks.
