Hello,
I am an experiences php programmer having more than 3 year experience in php, you can ask for previous work in private and can also propose to do some sample work since i have ability and i can prove that too.
I am new to freelancer, so can do your project in competitive price, i have read your requirement and can do it within the time period, kindly contact for further discussion.
I have implemented google calender and doc & google captcha in recent sites and you can ask for reference also but in private.
Thanks
ashishzworld