array_udiff
Computes the difference of arrays by using a callback function for data comparison. This is unlike array_diff which uses an internal function for comparing the data.
Parameters
- array
-
The first array.
- arrays
-
Arrays to compare against.
- value_compare_func
-
The callback comparison function.
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.
callback(mixed$a,mixed$b ): int
Return Values
Returns an array containing all the values of array that are not present in any of the other arguments.
Notes
Note:
Please note that this function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using array_udiff($array1[0], $array2[0], "data_compare_func");.