Using Type Juggling/Type Casting to Modify Data Types
We're going to be dealing with type juggling in this article. This is the process of instructing PHP how to handle the value after the type juggling. Type juggling can do absolutely all sorts, from converting integers to floats, arrays to objects, and even strings to binary as of PHP 5.2.1. It can also save you calling various functions and thus making your script quicker!
http://www.good-tutorials.com/tutorial/23986/using-type-juggling-type-casting-to-modify-data-types
