Reporting from Database

Hi, I'm setting up an event calendar for an organization, and I'm running into several problems. Firstly, there seems to be no standardization in the event listings - by this I mean that some events are single days while others span several days - some events have only one start time during the day while others have three or more. I have the database setup in MySQL already to cope with the different listings, however, I want to use a PHP script (version 3.0.16) to display the information in a web browser. This part mostly works, I say mostly, because it displays everything in the database that satisfies the search (in this case by the month, then by the event). I would like to have someway of making the PHP script determine if there is a value in the table and if not, to not display anything. An example is as follows: Event A begins at 10:00AM and goes to 11:30AM, then begins again at 3:30PM until 5:00PM. While Event B simply begins at 1:30PM. In this example I do not want the second time block to show up for Event B, but I do want it for Event A. I hope this does not come across as too confusing, but I've been working on it all weekend with my limited beginners knowledge of PHP. Thanks -Tim