(PHP Extension) Date/Time Expires Within N Seconds/Minutes/Hours/Days

Demonstrates the how to tell if a date/time is within N seconds, minutes, hours, or days of the current system time.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

$dt = new CkDateTime();

// Set to the current system date/time.
$dt->SetFromCurrentSystemTime();
print 'Now: ' . $dt->getAsTimestamp(true) . "\n";

// Add 10 minutes, making the date 10 minutes in the future.
$dt->AddSeconds(600);
print '10 minutes from now: ' . $dt->getAsTimestamp(true) . "\n";

// Is the date/time within 10 seconds of expiration (i.e. within 10 seconds of now)?
$b = $dt->ExpiresWithin(10,'seconds');
print 'Expires within 10 seconds: ' . $b . "\n";

// Does the date/time expire within 5 minutes?
$b = $dt->ExpiresWithin(5,'minutes');
print 'Expires within 5 minutes: ' . $b . "\n";

// Does the date/time expire within 15 minutes?
$b = $dt->ExpiresWithin(15,'minutes');
print 'Expires within 15 minutes: ' . $b . "\n";

// Does the date/time expire within 1 hour?
$b = $dt->ExpiresWithin(1,'hour');
print 'Expires within 1 hour: ' . $b . "\n";

// Does the date/time expire within 1 day?
$b = $dt->ExpiresWithin(1,'day');
print 'Expires within 1 day: ' . $b . "\n";

// Output:

// 	Now: 2017-05-05T23:48:00-0500
// 	10 minutes from now: 2017-05-05T23:58:00-0500
// 	Expires within 10 seconds: False
// 	Expires within 5 minutes: False
// 	Expires within 15 minutes: True
// 	Expires within 1 hour: True
// 	Expires within 1 day: True

?>