delete the images from the folder using cronjob in php

delete the images from the folder using cronjob in php

I am working in a PHP language . I have used a cronjob in window 7 in PHP
ie to update the value after 5 Min . Now I want to use the cronjob to
delete the images from the folder . Suppose there are more than 10 images
and at midnight , I want to delete all the images not the folder . I have
never deleted the images from the folder using php .