Updating php.ini in beanstalk

For my current project i am trying to enable the php_pdo_oci8.dll extension in the php.ini file on my beanstalk server. To this end i created a .ebextensions folder with a phpstuff.config file in it containg the following:

files:
  "/etc/php.d/project.ini" :
    mode: "000644"
    owner: root
    group: root
    content: |
      extension=php_pdo_oci8.dll

this however, has seemingly had no effect as i continue to get

Fatal error: Call to undefined function oci_connect() in...

I am not sure where I am going wrong at this point.