Name
array_diff_ukey
Synopsis
array array_diff_ukey(arrayarray1, arrayarray2[, ... arrayarrayN], callablefunction)
Returns an array containing all the values in
array1 whose keys are not present in any of
the other provided arrays. The function
function is used to compare the keys of the
elements for equality. The function is called with two parameters—the
keys 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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