The array_uintersect_uassoc() function compares two or more arrays, in two user-made functions,
and returns an array containing the elements from the first array, if the user-made functions
allow it. The first user-made function compares array keys, and the second compares array
values, and both returns a numeric value, 0 if the returned array should contain this
Hint: You can compare the first array with one array, or as many as you like.
Note: For comparison, the key is used in the first function and the value is used in the
second. They are both user-made functions.
The output of the code above will be:
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