change my variable value automatically

[Anon]

I want to change my variable value at 12 o'clock automatically in the mid night, and then post it to another php file, how can i?

[bretticus]

In order to have your program run automatically, you need to write your php script as a shell script. However php needs to be compiled as a CGI binary instead of an Apache module to do so (this may be different for newer versions but I'll leave you to do that research). Shell script example:

#!/usr/local/bin/php -q
<?php

print("Hello, world!\n");

?>

the -q switch suppresses html headers.

Now just learn cron and you're set ;-)