Modify small PHP script to post to a Google+ Community

I already have a script that needs some changes. I tried to make it done, but I'm struggleing with the way the data is posted. What I want is to have it modified and working. What it has to do: 1. Upload a photo to a Google+ Community 2. Make a simple post with a small text, link and the image previously uploaded. Keep in mind that I need it done in PHP, as the current code I had done is in PHP. It doesn't use any library or whatsoever. I need it to be working by cookies. The cookies are okay, but I'm stuck with the POST data and can't figure it where is the problem. The budget for this project is $50. I'll provide the script after you bid and I see you have a promising bid.