How to normalize an array in php?

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ff0xff2018-09-02 14:44:05

Algorithms

ff0xff, 2018-09-02 14:44:05

I have a formula to normalize a data vector in the range -1 to 1
The R package has a standard function data.Normalization
n5 - normalization in range <-1,1> ((x-mean)/max(abs(x-mean) ))
but I can't figure out how to program it in php,
does anyone know what the mean is, what should he do?

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xmoonlight, 2018-09-02
@ff0xff

mean

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