So far we have seen a PHP array as a dynamic, hybrid data structure for storing any type of data. This gives us a lot more freedom to utilize an array as a flexible storage container for our data. We can mix different data types and different dimensions of data in a single array. We do not have to even define the size or type of array we are going to use. We can grow, shrink, and modify data to and from an array whenever we need to.
Not only does PHP allows us to create dynamic arrays, but it also provides us with lots of built-in functionalities for arrays. For example: array_intersect, array_merge, array_diff, array_push, array_pop, prev, next, current, end, and many more.
