PDFTron.so PHP dynamic loading error

Technical Support Apryse SDK
1

Hi all,

I get the following error when trying to execute a php script from cli as a non root user:

PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib/php5/20131226/PDFNetPHP.so’ - libPDFNetC.so: cannot open shared object file: No such file or directory in Unknown on line 0

My OS is a vagrant with Ubuntu 14.04 lts, php version is 5.6.8-1 . I am also using apache but this is not used because I am using the cli version.

I tried assigning persmissions 777 to /usr/lib/php5/20131226/PDFNetPHP.so but the error persisted so it makes me think that is not an error of permission (at least not totally).
Maybe I have to export a path as in https://groups.google.com/forum/#!searchin/pdfnet-sdk/ibPDFNetC.so$3A$20cannot$20open$20shared$20object$20file/pdfnet-sdk/WY_zF_d-VF0/n_JDibKSMLUJ.
I tried to export that path but it didn’t work for me/

Thanks,
Julio Sarachaga

2

Hi Julio:

Can you please check your php.ini (in Ubuntu it will most likely be at /etc/php/php.ini)? Can you please verify that your extension settings are correct - e.g. all the entries listed as “extension=/some/path/to/extension” are valid.

Best Regards,
Vincent Ycasas
vycasas@pdftron.com

3

Hi Vincent,

That is not the problem, I have just checked the php.ini and changed the extension and it didn’t work.

Regards,
Julio

4

You will also need to make sure that all other entries are valid in the php.ini file. For example:

extension=/usr/lib/libPDFNetC.so
extension=

will not work because one of the extension has an empty entry. If one of the extensions are also pointing to a non-existent file, then you can possibly get the error you mentioned.

5

The PDFNetWrappers GitHub page has been updated, so that calling

sudo make install

will now place the PDFNetPHP.so into the PHP extensions directory.

This is done by calling

php-config --extension-dir

To get the path.

The PDFNetPHP.so file needs to be in the folder pointed to by ‘php-config --extension-dir’. It appears that this is not the case.

The other two files, PDFNetPHP.php and libPDFNetC.so, should be in the folder indicated by the LD_LIBRARY_PATH environment variable. In our samples this variable is set by the RunTest.sh file.

Summary:

PDFNetPHP.so : php-config --extension-dir PDFNetPHP.php : LD_LIBRARY_PATH libPDFNetC.so : LD_LIBRARY_PATH

6

@Ryan Its 2021 now.

Facing the same issue :slight_smile: Not sure of where the LD_LIBRARY_PATH points to. Should this be something created by ourselves?

Thanks!