[php] PHP Warning: PHP Startup: Unable to load dynamic library

If you just want to make the error disappear, and you don't need the extension, then by all means comment the line out in php.ini. But if you actually want to fix the problem here is some additional info.

There are various causes for this based on the exact module, but there are also some general guidelines.

  1. Open phpinfo() and look for extension_dir under the Core section. This is where your modules should be located.

For instance, /usr/lib/php/modules for Unix/Linux.

  1. If the file does in fact exist, make sure permissions are adequate.
  2. If the file does not exist, use the resources below to install it.

Installation on *nix (PEAR)
Installation of extensions on Windows