array_intersect_uassoc() returns an array
containing all the values of array1
that are present in all the arguments. Note that the keys are used in
the comparison unlike in array_intersect().
The index comparison is done by a user supplied callback function.
It must return an integer less than, equal to, or greater than zero
if the first argument is considered to be respectively less than,
equal to, or greater than the second.
Parameters
array1
Initial array for comparision of the arrays.
array2
First array to compare keys against.
array
Variable list of array arguments to compare values against.
key_compare_func
User supplied callback function to do the comparision.
Return Values
Returns the values of array1
whose values exist
in all of the arguments.