This Demo PHP/Javascript application is a demonstration sample, to illustrate one possible way to implement a client flow OAuth 2.0 strategy for Constant Contact.
This Demo is offered "as-is" and is not directly supported by Constant Contact. It is expected that anyone using this application has the technical knowledge to troubleshoot or debug their own installation.
PHP Version 5 + is required for this application to run, as CURL and JSON and header functions are not integral to earlier PHP Versions.
If you find this demo useful, or wish to use it as a basis for authentication in your own applications, please feel free to fork this repository and do so.
I make no promises or guarantees that this will work on all webhosts and or with all server configurations.