How to add days to $Date in PHP?

Adding days to $Date can be done in many ways. It is very easy to do by using built-in functions like strtotime(), date_add() in PHP.
Method 1: Using strtotime() Function: The strtotime() Function is used to convert an English textual date-time description to a UNIX timestamp. 
Syntax:

strtotime( $EnglishDateTime, $time_now )

Parameters: This function accepts two optional parameters as mentioned above and described below. 

• $EnglishDateTime: This parameter specifies the English textual date-time description, which represents the date or time to be returned.
• $time_now: This parameter specifies the timestamp used to calculate the returned value. It is an optional parameter.

Program: PHP program to add days to $Date in PHP using strtotime() function. 

php

<?php
// PHP program to add days to $Date

// Declare a date
$Date = "2019-05-10";

// Add days to date and display it
echo date('Y-m-d', strtotime($Date. ' + 10 days'));

?>

Output:

2019-05-20

Method 2: Using date_add() Function: The date_add() function is used to add days, months, years, hours, minutes and seconds.
Syntax:

date_add(object, interval);

Parameters: This function accepts two parameters as mentioned above and described below: 

• Object: It specifies the DateTime object returned by date_create() function.
• Interval: It specifies the DateInterval object.

Program: PHP program to add days to $Date in PHP using date_add() function. 

php

<?php
// PHP program to add 10 days in date

// Declare a date
$date = date_create("2019-05-10");

// Use date_add() function to add date object
date_add($date, date_interval_create_from_date_string("10 days"));

// Display the added date
echo date_format($date, "Y-m-d");

?>

Output:

2019-05-20