StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
in PHP, how do I check how long it has been since the user last used my Facebook app?
| Author | Votes | Δ |
|---|---|---|
| Igy | 0 | 0.00 |
Last visited: Sep 14, 2014, 5:07:29 AM