PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!
Set Search Time - A google chrome extension. When you search only results from the past year (or set time period) are displayed. Helps tremendously when using new technologies to avoid outdated results.
Read the section on sessions in the manual. There are several functions that can be used to determine if the session has started (e.g., session_id()). First make sure you session has started and it is not a php.ini configuration problem.