How to convert all keys in a multi-dimenional array to snake_case?

Question

I am trying to convert the keys of a multi-dimensional array from CamelCase to snake_case, with the added complication that some keys have an exclamation mark that I\'d like rem

Answer 1

I'd say you would have to write a function to copy the array (one level) and have that function call itself if any of the values is an array (a recursive function).

• The exclamation marks are easily removed using trim()
• The underscore before the uppercase characters in the middle can be added using a regex
• After adding the underscore, the whole key can be converted to lower case

What exactly do you need any specific help with?