How can PHP's date() function be used to get the date of the last 5 days?

To get the date of the last 5 days using PHP's date() function, you can use the strtotime() function to calculate the timestamp of 5 days ago and then format it using the date() function. This will give you the date of the last 5 days in the desired format.

$last5Days = date('Y-m-d', strtotime('-5 days'));
echo $last5Days;