The array_walk_recursive() function runs each array element in a user-made function. The array's
keys and values are parameters in the function. The difference between this function and the
array_walk() function is that with this function you can work with deeper arrays (an array
inside an array). Returns True or False
Hint: You can assign one parameter to the function, or as many as you like.
The output of the code above will be:
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