delete from array

Not sure if there is a function that I missed when I did a search on this at php.net, but here is the situation: I have an array that looks something like this: 12:00:00 12:05:00 12:10:00 12:15:00 Bascially, it just has all times in it for a day in 5 minute increments. This is more of a template array for other things that I am doing. How do I delete a specific time out of the array or how do I delete a range of times out of the array? I would like to be able to delete 12:05:00 but if I want, delete a range like 12:05:00 to 12:10:00. I have other arrays that do NOT have numbers (times) in them and would like to be able to delete a specific item out of them too. Thanks Steve