Bug #13226: Add a session_lock function

From: fupay@lycos.com Operating system: Linux PHP version: 4.0.6 PHP Bug Type: Feature/Change Request Bug description: Add a session_lock function Some problem occurs if I want the database can only one user can use the database at time. For others, keep them in a query. The go one by one. The Problem - Example: I want to limit the registation, max 50 people. There is a problem in checking the number of people registered, if there are many people click the submit button at the same time. Therefore, use session_lock()(can change the name, just example) function the block the user, and let them the process the code one by one. Maybe also need a session_unlock(), to unlock. It is just like the Applicaion.lock() and Application.unlock() in ASP -- Edit bug report at: http://bugs.php.net/?id=13226&edit=1