How can PHP developers handle situations where timestamps in different arrays do not match for multiplication?

When timestamps in different arrays do not match for multiplication, PHP developers can align the timestamps by finding the common timestamps in both arrays and then perform the multiplication based on those aligned timestamps. This can be achieved by using array_intersect_key() function to get the common timestamps and then iterate through the arrays to perform the multiplication.

$array1 = [1500000000 => 10, 1500000010 => 20, 1500000020 => 30];
$array2 = [1500000005 => 2, 1500000015 => 3, 1500000025 => 4];

$common_timestamps = array_intersect_key($array1, $array2);

$result = 0;
foreach ($common_timestamps as $timestamp => $value) {
    $result += $array1[$timestamp] * $array2[$timestamp];
}

echo "Result of multiplication: " . $result;