To add days to $Date in PHP, the code is as follows−
Example
<?php
$date = "2019-11-11";
echo "Displaying date...\n";
echo "Date = $date";
echo "\nDisplaying updated date...\n";
echo date('Y-m-d', strtotime($date. ' + 20 days'));
?>Output
This will produce the following output−
Displaying date... Date = 2019-11-11 Displaying updated date... 2019-12-01
Example
Let us now see another example −
<?php
$date = date_create("2019-11-11");
echo "Displaying Date...";
echo date_format($date,"Y/m/d");
date_add($date, date_interval_create_from_date_string("25 days"));
echo "\nDisplaying Updated Date...";
echo "\n".date_format($date, "Y/m/d");
?>Output
This will produce the following output−
Displaying Date...2019/11/11 Displaying Updated Date... 2019/12/06