How to priodically insert data into MySQL?

[yllkabaci]

Hello,
i have to write an application in php-mysql that have to:
1. get and display weather from Yahoo weather (done).
2. every day should save the min and max temp in a mysql database.

the application should save the temperature every day, even when it is not opened by a user.
is there any method to insert data into database periodically, without depending on user access of the page?
thankyou

[johnj]

1.write the method that will get the data and insert into the database.
2.create a cron job and run the above method..say every day at 6 am