The key of the php array is dynamic, so how to find it?

data:
["11lap22 / [dynamic]" = > VAL]
.
many pieces of data

how to match such a key?
is there any other good way to do this besides traversing?

Php
Aug.10,2021

this is the most basic traversal in PHP.

  

finally I adopted the traversal method, and then used the rule to match

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