Types of PHP arrays - multidimensional arrays

Types of PHP arrays - multidimensional arrays

What is a PHP multidimensional array?

The two articles introduced earlier "Types of PHP arrays-numeric index array" and "Types of PHP arrays-associative arrays" They are all one-dimensional arrays. Today we will introduce multi-dimensional arrays in detail!

Arrays with more than one dimension can be called multi-dimensional arrays

We need to understand that an array is not necessarily a simple list of subscripts and values. In fact, each element in the array The elements can also be another array.

So if the array element in a one-dimensional array is also an array, then it becomes a two-dimensional array.

PHP multi-dimensional array sample code

##Dimensions of the array: two-dimensional

Define the above two-dimensional array:

The way to obtain the element "Li Qiang" in the above two-dimensional array is as follows:

The output result is :

##Dimensions of the array: three-dimensional

Method to obtain "Li Qiang" and "Liu Jun":

"; echo $arr[1][1][1];//获取刘军的方式 ?>

The output result is:

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