<?php
// Declare two arrays
$arr1 = array(1, 2, 3);
$arr2 = array(2, 3, 4);
// Union operator
$union = $arr1 + $arr2;
echo "Union operator: ";
print_r($union);
// Equality operator
if ($arr1 == $arr2) {
echo "Arrays are equal <br>";
} else {
echo "Arrays are not equal <br>";
}
// Identity operator
if ($arr1 === $arr2) {
echo "Arrays are identical <br>";
} else {
echo "Arrays are not identical <br>";
}
// Inequality operator
if ($arr1 != $arr2) {
echo "Arrays are not equal <br>";
} else {
echo "Arrays are equal <br>";
}
// Non-identity operator
if ($arr1 !== $arr2) {
echo "Arrays are not identical <br>";
} else {
echo "Arrays are identical <br>";
}
// Difference operator
$diff = array_diff($arr1, $arr2);
echo "Difference operator: ";
print_r($diff);
// Intersection operator
$intersect = array_intersect($arr1, $arr2);
echo "Intersection operator: ";
print_r($intersect);
?>