One way to allow for different settings or passwords between your development and production environments is to use environment variables. PHP Fog allows you to configure custom environment variables in the app console. You would then set the same envars on your dev system.
Example:
Local Machine: Edit your .bash_profile or export the following line.
CONFIG_PASSWORD=devpassword1
In the PHP Fog App Console set the following environment var:
CONFIG_PASSWORD=prodpassword1
Then access them from your php app:
$config_password = getenv("CONFIG_PASSWORD");
Add as many different env vars as you need. This way of accessing the password will work the same in both dev and production environments so your code does not need to change.
See my answer to a similar question: https://stackoverflow.com/a/8786086/78685