Here is SteemPHP v0.2 Release notes:
v0.2 contains up-to 71 functions that are mainly used to fetch data
-fetching article/comments/upvotes
-fetching blocks
-fetching details about the blockchain/HF/version and more
-fetching witness details
-fetching steemit market
-fetching accounts and their info
What will be available in v0.3?
-creating articles/comments/upvoting/reblog
-more functions for fetching account details
-WIF functions
-more documentation
Follow for more details
The code for SteemPHP can be found on GitHub through the link (https://github.com/davidkevork/steemphp)