What are some common methods to format dates in PHP from German to English?

Dates in German format (dd.mm.yyyy) can be converted to English format (mm/dd/yyyy) using the `strtotime()` and `date()` functions in PHP. By using `strtotime()` to convert the German date string to a Unix timestamp, we can then use `date()` to format the timestamp in the desired English format.

$germanDate = '31.12.2021';
$englishDate = date('m/d/Y', strtotime(str_replace('.', '/', $germanDate)));
echo $englishDate;