I am learning PHP. i want to test my skills by creating a project. Now i don't know what i should be developing. I want to develop this project not only for learning but also for showing my skills too. so, in future if i apply for a job or something i can put this in my resume and can say i developed this project.

Can somebody please suggest something?? i know this sounds funny but i am thinking for over 2 weeks now and could not decide what i should develop.

Help Please.
Note: My skills are between intermediate and advanced