What is the potential benefit of using array_diff in PHP for comparing arrays?

When working with arrays in PHP, you may need to compare two arrays to find the differences between them. One way to do this is by using the array_diff function, which compares two arrays and returns the values from the first array that are not present in the second array. This can be useful for tasks such as finding missing elements, identifying changes, or filtering out unwanted values.

```php
$array1 = [1, 2, 3, 4, 5];
$array2 = [3, 4, 5, 6, 7];

$diff = array_diff($array1, $array2);

print_r($diff);
```

In this code snippet, $array1 contains values [1, 2, 3, 4, 5] and $array2 contains values [3, 4, 5, 6, 7]. The array_diff function is used to compare the two arrays and return the values from $array1 that are not present in $array2. The output will be [1, 2] as these values are present in $array1 but not in $array2.