What is the best way to convert a timestamp into a readable date and time format in PHP?

When working with timestamps in PHP, you can convert them into a readable date and time format using the `date()` function. This function takes two parameters: the format you want the date and time to be displayed in, and the timestamp you want to convert. By specifying the desired format (e.g., 'Y-m-d H:i:s'), you can easily convert a timestamp into a human-readable date and time format.

$timestamp = 1626847200; // Example timestamp
$date = date('Y-m-d H:i:s', $timestamp);
echo $date; // Output: 2021-07-21 12:00:00