daily backup using robocopy

i want to write a script that copies data from a specific directory in windows to a directory in a network share vice versa.and i want the script run daily(could be dne with task scheduler) but i need the copies to be named as the per the the date that it was taken. i hope i was clear in my request.Does anyone have a sample or template that i can use it have this script.and after 7 the oldest backup should get deleted automatically.if possible the backup should be in zip or rar format. days thank to you all