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chapters/basics/09-arrays.md

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+In PHP, arrays are used to store a list of items in a single variable.
+There are two ways to create an array.
+
+First, you can use the `array` construct to pass in values separated by commas
+and it will return an array.
+```php
+<?php
+
+$taskList = array('grocery store', 'change car oil');
+```
+
+Second, you can surround the list in square brackets.
+This style is the most common and recommended form
+of creating an array.
+```php
+$groceryList = ['bread', 'milk', 'eggs'];
+```
+
+PHP will automatically assign index keys for each value in an array
+starting with 0. So, to access a value in an array you will
+pass the key number into brackets after the variable name.
+```php
+echo $groceryList[0] . "\n";
+echo $groceryList[1] . "\n";
+```
+
+You can also assign keys in an array using numbers or strings.
+It is very common to create an array with string keys. The feature
+is called an associative array or a map.
+```php
+$car = ['make' => 'Toyota', 'model' => 'Camry'];
+```
+
+To access the value in an associative array, just use the string key in brackets
+after the variable name.
+```php
+echo $car['model'] . "\n";
+```