array_diff_ukey php function
array_diff_ukey — Computes the difference of arrays using a callback function on the keys for comparison
Description
array_diff_ukey(array $array, array ...$arrays, callable $key_compare_func): array
Compares the keys from array against the keys from arrays and returns the difference. This function is like array_diff() except the comparison is done on the keys instead of the values.
Unlike array_diff_key() a user supplied callback function is used for the indices comparison, not internal function.
Parameters
array
The array to compare from
arrays
Arrays to compare against
key_compare_func
The comparison function 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.
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