What is the best practice for implementing time-limited display of database entries in PHP?

To implement time-limited display of database entries in PHP, you can add a timestamp column to your database table to track when each entry was created. When querying the database, include a condition to only select entries that were created within a certain time frame. This can be achieved by comparing the current time with the timestamp of each entry and filtering out entries that exceed the time limit.

// Assuming you have a database connection established

// Define the time limit in seconds (e.g. 24 hours)
$timeLimit = 24 * 60 * 60;

// Query to select entries created within the time limit
$query = "SELECT * FROM your_table WHERE UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(created_at) <= $timeLimit";
$result = mysqli_query($connection, $query);

// Loop through the results and display them
while($row = mysqli_fetch_assoc($result)) {
    echo $row['column_name'];
}