Primer for working with arrays

I need a really good primer for working with arrays in PHP and with MySQL. I can do what I need to do without them right now, but I would really like to get arrays figured out. Any have some good ones? Thanks! Robert -- Robert Sossomon, Business and Technology Application Technician 4-H Youth Development Department 200 Ricks Hall, Campus Box 7606 N.C. State University Raleigh NC 27695-7606 Phone: 919/515-8474 Fax: 919/515-7812 robert_sossomon@ncsu.edu