Definition :
The array_udiff_assoc() function compares the values of two or more arrays and returns the differences with additional key check using a user-defined value comparison function.
The basic syntax of the array_udiff_assoc() function is given with:
array_udiff_assoc(array1, array2, ..., value_compare_function);
The array_udiff_assoc() function accepts the following parameters.
| Parameter | Description |
|---|---|
| array1 | Required. Specifies the array to compare from. |
| array2 | Required. Specifies an array to compare against. |
| ... | Optional. Specifies more arrays to compare against. |
| value_compare_function | Required. Specifies a callback function to use for value comparison. |
Example : Compare the keys and values of two arrays (using a built-in function to compare the keys and a user-defined function to compare the values) and return the differences.
Output :
Array
(
[a] => Web
[b] => Designing
[c] => House
)