Flattening a Multidimensional Array

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To meet the challenge of flattening a multidimensional array, one should consider

Maximum Value

Sometimes you may wish to use PHP to do something as simple as finding the maximum numeric value in an array.

Multi-Dimensional Array Fun!

Working with multi-dimensional arrays in PHP can actually be fun. There is virtually every array function built into PHP that you could hope for. That said, one must carefully choose the right one(s).