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  Can't get sample programs to run
Posted by Steve on Jul-15-2016 11:13
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I have installed chartdirector as per the instruction but i get the following message when going to the index page and hitting the test link.


PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/phpchartdir550mt.dll' - /usr/lib/php5/20121212/phpchartdir550mt.dll: wrong ELF class: ELFCLASS32 in Unknown on line 0


I have no idea how to correct this message

here is the message i get from the test page

System Information

    Operating System : Linux daqsrv5 4.2.0-41-generic #48~14.04.1-Ubuntu SMP Fri Jun 24 17:09:15 UTC 2016 x86_64
    PHP version : 5.5.9-1ubuntu4.17
    PHP / Web Server interface : apache2handler
    PHP configuration file location : "/etc/php5/apache2/php.ini"
    PHP extension directory : "/usr/lib/php5/20121212"


I moved all files from chartdirector/lib file to the php extension folder listed above, i have added the following to my php.in file..

extension=phpchartdir550mt.dll

i have tried the other version as well without the mt............

any help would be appreciated i really would like to switch to a better graphing solution

  Re: Can't get sample programs to run
Posted by Peter Kwan on Jul-15-2016 12:45
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Hi Steve,

The "ELFCLASS32" error usually is caused by trying to load a 32-bit shared object in a 64-bit process.

Is it possible you have downloaded ChartDirector for PHP for Linux (i386/i686), but your operating system is actually Linux (x86_64) as indicated in the "System Information"?

Please try to download "ChartDirector for PHP for Linux (x86_64), and copy *everything* (including the fonts subdirectory) in "ChartDirector/lib" to "/usr/lib/php5/20121212". To double check, the file size of "libchartdir.so" should be around 4.7MB, while the "phpchartdir550.dll" should be 12160 bytes in size.

Then please modify the extension statement to:

extension=phpchartdir550.dll

Then please restart Apache. If you are using Ubuntu, it might be "sudo apachectl restart" (it may depend on your Ubuntu Linux version).

(Usually, Linux PHP is non-thread-safe. It is because Linux using forking, so multi-threading is not necessary and can only make the system slower. As a result, most Linux distribution comes with non-thread-safe PHP. However, if you compile the PHP yourself or download it from other sources, it can be thread-safe, in which case please use phpchartdir550mt.dll. You can use phpinfo to check if the PHP is thread-safe or not.)

Hope this can help.

Regards
Peter Kwan