Spark Authentication

One of the options to authenticate with is using 'Spark Authentication' method. This page goes over the Spark Authentication:

Example

 // Sets the Spark Authentication
 $api = new SparkAPI_APIAuth($api_key_goes_here, $api_secret_goes_here);
 
 // Unlike the OAuth2 and the Hybrid Authentications, this is a single access authentication through one member, so no redirect is necessary, but it is limited to that one account.

Spark Platform Documentation

Spark Authentication Protocol