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Programming PHP, 3rd Edition by Peter MacIntyre, Kevin Tatroe, Rasmus Lerdorf

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Name

array_intersect_uassoc

Synopsis

array array_intersect_uassoc(array array1, array array2
  [, ... array arrayN], callable function)

Returns an array containing all the values present in all of the given arrays.

The function function is used to compare the keys of the elements for equality. The function is called with two parameters—the values to compare. It should return an integer less than 0 if the first argument is less than the second, 0 if the first and second arguments are equal, and an integer greater than 0 if the first argument is greater than the second. The keys of the values are preserved.

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