I have an idea for the web site i've been working on. We have to somewhere have a working database and have it being used on at least 3 pages.

In the database it would contain a customer ID, year, month, day, event name, and start/end time of an event.

I wanted to make a calander in PHP that if your looking at a certain month and someone has something scheduled on that day the calander would show the times slots that are already used. This would make it so people trying to make a reservation would know what times are open and not open.

I also wanted to have a form someone could fill out online and submit it with their contact information along with the other information needed for the calander. The form would then insert all the information into the database where the company could access it using some sort of interface.

My problem is i'm not sure if i know the right languages to do all of this. Would this whole thing be made using SQL and PHP? Can you have PHP update, insert, and delete things inside of a database or do i need to do some research on another language? I Dont know anything about ASP .NET but from what i have heard i think i might need to know somen .NET to make all of this work. Anyone have any idea?

php is all you need

SQL (Structured Query Language) is a standard language used to talk to a database. It's SQL that you'll use to insert, update, delete and query a database. No matter what language you use, you will need to know SQL.