(PHP Extension) Get Certificate Valid To/From Dates

Demonstrates how to get the certificate "valid from" and "valid to" dates.

Note: This example requires Chilkat v11.0.0 or greater.

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<?php

include("chilkat.php");

$success = false;

$cert = new CkCert();

$success = $cert->LoadFromFile('qa_data/certs/testCert.cer');
if ($success == false) {
    print $cert->lastErrorText() . "\n";
    exit;
}

// Get the certificate valid-from date/time
$ckdt = new CkDateTime();
$ckdt->SetFromRfc822($cert->validFromStr());

// Get the local timestamp string.
print 'Valid from: ' . $ckdt->getAsTimestamp(true) . "\n";
// Valid from: 2017-03-17T19:00:00-05:00

// Now get the date/time as another object where we can get the individual numeric date parts.
$dt = new CkDtObj();
$ckdt->ToDtObj(true,$dt);

print $dt->get_Day() . '/' . $dt->get_Month() . '/' . $dt->get_Year() . '  ' . $dt->get_Hour() . ':'
     . $dt->get_Minute() . "\n";

// Get the certificate valid-to date/time
$ckdt->SetFromRfc822($cert->validToStr());

print 'Valid to: ' . $ckdt->getAsTimestamp(true) . "\n";
// Valid to: 2020-03-18T18:59:59-05:00new DtObj dt;
$ckdt->ToDtObj(true,$dt);

print $dt->get_Day() . '/' . $dt->get_Month() . '/' . $dt->get_Year() . '  ' . $dt->get_Hour() . ':'
     . $dt->get_Minute() . "\n";

?>