How Can I Calculate the Difference Between Two Dates in PHP and Display the Result as Years, Months, and Days?

Calculating Date Differences in PHP

Given two dates in the format "2007-03-24" and "2009-06-26," you seek a PHP solution to determine the difference between them in the form "2 years, 3 months, and 2 days."

Solution

Leveraging DateTime and DateInterval objects, the following PHP code accomplishes your goal:

$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);

echo "difference " . $interval->y . " years, " . $interval->m . " months, " . $interval->d . " days";

For a total day count without partitioning into years, months, and days, use:

echo "difference " . $interval->days . " days";

Additional Notes

• PHP allows comparison of DateTime objects using "==", "<", and ">".
• The following example demonstrates date comparison:

$date1 = new DateTime("now");
$date2 = new DateTime("tomorrow");

var_dump($date1 == $date2); // false
var_dump($date1 < $date2); // true
var_dump($date1 > $date2); // false

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