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PHP PHP Arrays and Control Structures PHP Arrays Multidimensional Arrays

Posted by A X
A X
12,842 Points

Not Understanding What a Multi-Dimensional Array is or What it does.

To me, what Alena typed as an example of a multi-dimensional array looks like a normal array with string associations inside it. I don't understand what makes it "multi-dimensional" in nature. Thanks for clarifying!

4 Answers

Ken Stone
Ken Stone
29,703 Points
Ken Stone
Ken Stone
29,703 Points

Try to think of it as rows and columns in a table. $array[row][col]

Also it could be considered an array of arrays.

A one dimensional array is probably what you learned first $array[index]

A two or multidimensional array is an array of one dimensional arrays.

A X
A X
12,842 Points

@Ken Stone Ah ok, so a 3 dimensional array would be like the x, y, and z coordinates on a graph then?

Emil Pesaxov
Emil Pesaxov
3,684 Points
Emil Pesaxov
Emil Pesaxov
3,684 Points

Hi everybody, if you guys have some basic knowledge in HTML then the best way to understand Multi-Dimensional Arrays would be to think of them as an <ol> or <ul> that consists of list items <li> and a list item can be another list that consists other list items within it, ad infinitum.

A multi-dimensional array is basically an array that holds as it's elements associative arrays when each array has a numeric index. So $myList[0] will bring the first associative array as the first element of the outside array.

Hope this helps someone. :)