How can PHP beginners effectively use timestamp data types for sorting dates and times in the correct chronological order?

When working with timestamp data types in PHP, beginners can effectively sort dates and times in the correct chronological order by using the `strtotime()` function to convert date/time strings into timestamps. Once the timestamps are obtained, they can be easily compared and sorted using PHP's array sorting functions like `usort()` or `asort()`.

// Sample array of date/time strings
$dates = array("2022-01-15 08:30:00", "2022-01-14 12:45:00", "2022-01-16 09:00:00");

// Convert date/time strings to timestamps
$timestamps = array_map('strtotime', $dates);

// Sort timestamps in ascending order
asort($timestamps);

// Output sorted dates
foreach ($timestamps as $timestamp) {
    echo date("Y-m-d H:i:s", $timestamp) . "\n";
}