PPT is not working when uploaded the Google Cloud

[pranshuagrawal]

So I made a PPT using PPTPowerpoint, the code is working absolutely fine on my localhost but when i try deploying it to Google Cloud, it doesn't responds. What I mean by it doesn't respond is

1. On chrome: It is giving ERR_INVALID_RESPONSE
2. On Firefox: It is giving File Not Found.

My GC is correctly configured to serve PHP files (though not sure do I need to firther configure it to support PPTX or not).

Does any one else has faced this issue, Any work around for this?

[pranshuagrawal]

The exact error which i can see in my Logs is:

PHP Fatal error:  Uncaught exception 'Exception' with message 'Could not close zip file vfs://root/temp/.//phppttmp569a3ebe8e10c9.36645304.' in /base/data/home/apps/s~frrolefrontend/mediascout:ms-080.390023055217794078/mediascout/ppt_export/src/PhpPresentation/Writer/PowerPoint2007.php:320

Stack trace:

0 /base/data/home/apps/s~frrolefrontend/mediascout:ms-080.390023055217794078/mediascout/ppt_export/samples/Sample_Header.php(72): PhpOffice\PhpPresentation\Writer\PowerPoint2007->save('php://output')

1 /base/data/home/apps/s~frrolefrontend/mediascout:ms-080.390023055217794078/mediascout/ppt_export/samples/scout_temp.php(381): write(Object(PhpOffice\PhpPresentation\PhpPresentation), 'scout_temp', Array)

2 {main}
  thrown in /base/data/home/apps/s~frrolefrontend/mediascout:ms-080.390023055217794078/mediascout/ppt_export/src/PhpPresentation/Writer/PowerPoint2007.php on line 320

[Progi1984]

@pranshuagrawal Are you writing in a directory where you have writing rights ?

[pranshuagrawal]

So in Google App Engine, we are required to write to buckets. We do not have write permission to the file system. So creating a file should be something like this:
file_put_contents('gs://bucket_name/app_name');

However, the save() function in PowerPoint2007.php is looking for a different directory path. When I log this path out it shows me: my/file/system/htdocs/gs:/bucket_name/app_name.

How do I get this to work on App Engine, any idea?

[Progi1984]

@pranshuagrawal I never use AppEngine, so I improvise.

Could you show me the code for saving the file ? (with content of variables) Thanks

[pranshuagrawal]

I am using two variants and none of them is working.
1.

$xmlWriter = IOFactory::createWriter($phpPresentation, "PowerPoint2007");
$xmlWriter->save("php://output");
return;

$xmlWriter = IOFactory::createWriter($phpPresentation, "PowerPoint2007");
$xmlWriter->save("gs://bucket_name/app_name");
return;

and none of them is working, the error is same in both the cases and it is Could not close zip file.

[Progi1984]

Try this :

ob_start();
$pptxWriter = IOFactory::createWriter($phpPresentation, "PowerPoint2007");
$pptxWriter->save("php://output");
$output = ob_get_contents();
ob_end_clean();

file_put_contents('gs://bucket_name/app_name', $output);

[Progi1984]

Some news ?

[pranshuagrawal]

So the issue was that App Engine does not have Zip Extension installed and we can not help it sadly. So I moved my PPT Export module to compute engine of GC which is nothing but a Linux VM, and now it is working great there.

Thanks for being so active here.

[Progi1984]

@pranshuagrawal I'm going to implement adapters for Zip : ZipArchive if installed or PclZip if not...

[Progi1984]

Linked to #176