How to make random stuff at my site?

[steven012]

I see some sites display random videos,games etc.How to make this effect?

[Mittineague]

If you put whatever you want to have as possible items into an array, you can use random() to access an item from the items. You don't need to "hard code" the array. You can populate it from a database query, or use file system functions too.

[earl-grey]

You can do that on the database level:

SELECT FROM table_name
ORDER BY RAND()
LIMIT items_count