Are there any PHP-specific techniques or functions that can be used to automatically update age values in the database without manual intervention?

One way to automatically update age values in a database without manual intervention is by using PHP to calculate the age based on the birthdate and update the database accordingly. This can be achieved by running a PHP script on a regular basis that retrieves the birthdate of each record, calculates the age, and updates the corresponding age value in the database.

<?php
// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Retrieve records from the database
$sql = "SELECT id, birthdate FROM users";
$result = $conn->query($sql);

// Calculate age and update database
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        $birthdate = new DateTime($row['birthdate']);
        $now = new DateTime();
        $age = $birthdate->diff($now)->y;
        
        $update_sql = "UPDATE users SET age = $age WHERE id = " . $row['id'];
        $conn->query($update_sql);
    }
} else {
    echo "0 results";
}

// Close connection
$conn->close();
?>