(PHP Extension) Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings.

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<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

// Imagine we have these strings:

$t1 = '2022-11-14 15:45:38';
$t2 = '2022-11-16 17:23:41';

// How many minutes are between the two?

// First, we'd want load each date/time into a Chilkat CkDateTime object.
// In this case, there are no CkDateTime methods that accept the above format.
// However.. the CkDateTime's SetFromTimestamp will accept a date in the format "YYYY-MM-DDThh:mm:ssZ"

// First modify the above dates to the timestamp format.
$sb1 = new CkStringBuilder();
$sb1->Append($t1);
$count = $sb1->Replace(' ','T');
$sb1->Append('Z');

$sb2 = new CkStringBuilder();
$sb2->Append($t2);
$count = $sb2->Replace(' ','T');
$sb2->Append('Z');

// Load each into a CkDateTime
$dt1 = new CkDateTime();
$dt1->SetFromTimestamp($sb1->getAsString());
// verify...
print $dt1->getAsTimestamp(false) . "\n";

$dt2 = new CkDateTime();
$dt2->SetFromTimestamp($sb2->getAsString());
// verify...
print $dt2->getAsTimestamp(false) . "\n";

// Get the difference in seconds
$diffSeconds = $dt2->DiffSeconds($dt1);
print 'Difference in seconds: ' . $diffSeconds . "\n";
print 'Difference in minutes: ' . ($diffSeconds / 60) . "\n";

?>