How can a symmetric difference set be formed in PHP?

To form a symmetric difference set in PHP, you can use the array_diff() function to find the elements that are present in one array but not in the other, and then merge the results. This will give you the symmetric difference set of two arrays. 

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

$diff1 = array_diff($array1, $array2);
$diff2 = array_diff($array2, $array1);

$symmetricDiff = array_merge($diff1, $diff2);

print_r($symmetricDiff);

Keywords

symmetric difference set PHP array_diff array_merge

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