This function returns a new array with the intersection of all arrays that you provide to it. An intersection refers to all the values that are present in all of the provided arrays.
The function also removes any duplicates found in the intersection, so it only returns unique values.
NOTE The order of elements in the new array is not ensured. If you need to sort the array you will need to do so afterwards.
array_intersection(array0, [array1, ... array_n]);
| Argument | Type | Description |
|---|---|---|
| array0 | Array | The first array |
| [array1, ... array_n] | Array | OPTIONAL Any number of arrays for the intersection (one array per argument) |
Array (the intersection of the provided arrays)
var _array1 = [1, 1, 2, 7, 12];
var _array2 = [1, 2, 4, 5, 7];
var _array3 = [1, 4, 5, 7];
var _array_intersection = array_intersection(_array1, _array2, _array3);
The above code first creates three temporary arrays _array1, _array2 and _array3. It then calls array_intersection to create a new array that is the intersection of these three arrays.
The _array_intersection array will be set to [1, 7] as these are the unique values present throughout all three arrays.