PHP Class Exercises : Calculate the difference between two dates

PHP class: Exercise-5 with Solution

Calculate the difference between two dates using PHP OOP approach.

Sample Dates : 1981-11-03, 2013-09-04

Sample Salution:

PHP Code:

<?php
// Create a new DateTime object representing the start date "1981-11-03"
$sdate = new DateTime("1981-11-03");

// Create a new DateTime object representing the end date "2013-09-04"
$edate = new DateTime("2013-09-04");

// Calculate the interval between the two dates
$interval = $sdate->diff($edate);

// Output the difference between the dates in years, months, and days
echo "Difference : " . $interval->y . " years, " . $interval->m . " months, " . $interval->d . " days ";
?>

Output:

Difference : 31 years, 10 months, 1 days

Explanation:

In the exercise above,

• $sdate = new DateTime("1981-11-03");: This line creates a new DateTime object named '$sdate' representing the start date "1981-11-03".
• $edate = new DateTime("2013-09-04");: This line creates a new DateTime object named '$edate' representing the end date "2013-09-04".
• $interval = $sdate->diff($edate);: This line calculates the difference between the start date '$sdate' and the end date '$edate' using the "diff()" method, and stores the result in the variable '$interval'.
• echo "Difference : " . $interval->y . " years, " . $interval->m . " months, " . $interval->d . " days ";: This line outputs the difference between the two dates in years, months, and days by accessing the properties $interval->y (years), $interval->m (months), and $interval->d (days) of the "$interval" object.

Flowchart :

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