How can PHP be used to sort and display user birthdays chronologically within a specified time frame?

To sort and display user birthdays chronologically within a specified time frame, we can first retrieve the birthdays from a database or an array, then use PHP's array sorting functions to sort the birthdays by date. Finally, we can loop through the sorted birthdays and display them within the specified time frame.

// Retrieve user birthdays from database or array
$birthdays = array(
    "Alice" => "1990-05-15",
    "Bob" => "1985-08-22",
    "Charlie" => "1995-02-10",
    // Add more birthdays here
);

// Sort birthdays by date
asort($birthdays);

// Specify the time frame
$startDate = strtotime('2022-01-01');
$endDate = strtotime('2022-12-31');

// Loop through sorted birthdays and display within specified time frame
foreach ($birthdays as $name => $birthday) {
    $birthdayTimestamp = strtotime($birthday);
    if ($birthdayTimestamp >= $startDate && $birthdayTimestamp <= $endDate) {
        echo $name . "'s birthday is on " . date('F jS', $birthdayTimestamp) . "<br>";
    }
}