How can the array_diff function in PHP be utilized to compare arrays effectively?

To effectively compare arrays in PHP, the array_diff function can be used. This function returns an array containing all the values from the first array that are not present in any of the other arrays provided as arguments. This allows for easy identification of differences between arrays.

$array1 = [1, 2, 3, 4, 5];
$array2 = [2, 3, 4];
$array_diff = array_diff($array1, $array2);

print_r($array_diff);