[PHP] getting iostat -x %b with php

[Iv Ray]

What is the best way to extract just the drive load information (%b 
column) from "iostat -x" (on  FreeBSD)?

I imagine to exec() the "iostat -x" and then process the result with 
regex, but I am not sure if this is the best way - for instance, is %b 
is aways the Nth column in the returned value?

Iv

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