Скачать или смотреть PHP in 60 - Arrays

PHP in 60, a 60 second lesson on a topic in PHP.

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In this lesson, we look at arrays and how they can help us handle our data.

Video Script:


An array is a variable that allows you to store multiple values in one variable. one use for arrays is when you have many variables that need to be iterated over, meaning you need a piece of code to do something to every variable in the array. PHP makes this easy, and you'll find it pretty common. Just remember that an array is simply a variable with many values in it.

There are a few different types of arrays, and all of them work similarly.

The first one is a numerical array. This one is probably the simplest. Values are stored in the array with an index starting at zero, and counting up. Your first value would be array[0], then array[1] etc,

The next one is an associative array. I use this one more often, but it depends on what best suits your needs. Associative arrays store a value with a key as the index within the array. For example, you could have status['zed'] = "dead". Associative arrays come up a lot when using databases, so it's good to know how they work.

The last type of array i'm going to show you is a multilayer array, which is just an array, but the value is another array. This doesn't come up too often, but you should know it's possible.

If your still wondering how to iterate over an array, check out PHP in 60: Loops.