Working with arrays. How to find the desired element and perform the desired action?

Question

PHP

I am a beginner programmer.
There is a large array: https://gist.github.com/anonymous/75b099fafc1057c7...
This is the statistics of calls from Ip-telephony.
I know [pbx_call_id] => in_cf2e65da2eacefc911161cf9d473decf62297f1a
I need to find all pbx_call_id where the key I need is contained, and depending on [disposition], [sip], in the arrays that contain the key I need, I need to perform an action.
How to do it?

Answer 1

traverse the array and do what needs to be done.
the problem is what? unfamiliar with loops or array functions?
upd and an array, then you have one-dimensional.