PHP

Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings. Chilkat2 PHP

<?php

use Chilkat2\DateTime;
use Chilkat2\StringBuilder;

// 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 StringBuilder();
$sb1->Append($t1);
$count = $sb1->Replace(' ', 'T');
$sb1->Append('Z');

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

// Load each into a CkDateTime
$dt1 = new DateTime();
$dt1->SetFromTimestamp($sb1->GetAsString());
// verify...
echo $dt1->GetAsTimestamp(false), "\n";

$dt2 = new DateTime();
$dt2->SetFromTimestamp($sb2->GetAsString());
// verify...
echo $dt2->GetAsTimestamp(false), "\n";

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