Online PHP editor | output for 5ha27

@ 2023-04-04T20:13:20Z

<?php
$locale = "es_MX";
$shortDatePattern = "dd/MM/yy";
$in_date = "4/4/23";
$timezone = "America/Mexico_City";

date_default_timezone_set($timezone);

$fmt = new IntlDateFormatter($locale,IntlDateFormatter::SHORT,IntlDateFormatter::NONE);
$fmt->setPattern($shortDatePattern);
$timestamp = $fmt->parse($in_date);
echo gmdate('Y-m-d H:i:s', $timestamp) . "\n";
echo date('Y-m-d H:i:s', $timestamp) . "\n";
echo $timestamp . "\n";
echo date_default_timezone_get() . "\n";

Output for 8.5.1 - 8.5.11: Fatal error: Uncaught Error: Class "IntlDateFormatter" not found in /in/5ha27:9 Stack trace: #0 {main} thrown in /in/5ha27 on line 9
Process exited with code 255.
Output for 8.0.26 - 8.0.30, 8.1.13 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: 2023-04-04 05:00:00 2023-04-03 23:00:00 1680584400 America/Mexico_City
Output for 8.0.1 - 8.0.25, 8.1.0 - 8.1.12: 2023-04-04 05:00:00 2023-04-04 00:00:00 1680584400 America/Mexico_City
Output for 8.1.34, 8.2.30 - 8.2.34, 8.3.28 - 8.3.35, 8.4.15 - 8.4.26, 8.5.0: 2023-04-04 06:00:00 2023-04-04 00:00:00 1680588000 America/Mexico_City

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