Sorting Arrays by Sub Array Values using PHP

Multidimensional arrays are very handy for storing lots of data in one array variable opposed to creating and having to manage many individual array variables. For example, let's say we need to store all of our employee's data. Instead of creating many different arrays, one for each employee, we can simply create a multidimensional array, and store all of the employee's data within that.

Multidimensional Array that we will sort

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