[upendrakumar]

how to run php script in background which inserts some values in mysql database without refreshing the current.
i want to track a user time who is currently using my elearning site, want to update and insert the used time in the database

needy for the script urgently
take thanks in advance

upendra (india)

[NeverMind]

there are two solutions that I can think of..
one is xmlHTTPRequest (Javascript) or Forking (may not work)
1- for xmlHTTPRequest, read:
http://developer.apple.com/internet/...mlhttpreq.html

2- for forking:
http://www.phpfreaks.com/tutorials/71/0.php

[kjmatthews]

XMLHttpRequest is like the new black these days. It is probably the better and more reliable option, if you can hack it out. Of course, users can still just turn javascript off on their browsers...

[moronovich]

2- for forking:
http://www.phpfreaks.com/tutorials/71/0.php

after a brief reading, i stopped. this tutorial deals nothing with forking a process. assigning the child process to /dev/null is not what a fork means to be since nobody gains control over the script (it only "dumps" the output through a background process).

anyway, here is a good intro for (posix) thread programming (thread vs. fork, mutexes, pipe, etc). this would give some explanation about forking and threading process, the background and the technique.

url: http://www.llnl.gov/computing/tutorials/pthreads/