2.6.4     Brief introduction to variable types

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Variables in PHP can be of type integer (a whole number), floating-point (usually called "float"; a fractional number), string (a set of characters), array (a group of data), object (a complex mix of data and functionality), or a resource (any outside information, such as picture data). We will be looking at data types in more depth later on; for now, you only need to know what variables are and how they work.