Chapter 5. ARRAYS
Topics in This Chapter
Single-Dimensional Arrays
Indexing Arrays
Initializing Arrays
Multidimensional Arrays
Casting Arrays
Referencing Arrays Inside Strings
Arrays collect values into lists. You refer to an element in an array using an index, which is often an integer but can also be a string. And the value of the element can be text, a number, or even another array. When you build arrays of arrays, you get multidimensional arrays. Arrays are used extensively by PHP's built-in functions, and coding would be nearly impossible without them. There are many functions designed simply for manipulating arrays. They are discussed in detail in Chapter 9.
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