Question:

Suppose you have a website where you need to set or display an expiry date 7 days from todays date. How do you do that?

Answer:

The technique is to add 7 days as represented in seconds to todays date as represented in UNIX timestamp and then convert the result into a date format you want.

Example

$today = date('U');
$days7 = 7 * 86400;

$end_date = $today + $days7;

echo '<p>Library book is due back on the ' . date('dS of F Y', $end_date) . '</p>';

Additional Notes

86400 is the number of seconds in a day.

PHP Reference Manual

date - Returns a formatted date

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