unix epoch

tmstmp.php

<?php
// ref: https://stackoverflow.com/questions/557959/

$mils = round(microtime(true) * 1000);
$sec = ceil($mils /  1000);

echo date("D M d Y H:i:s",$sec);
echo " ---> ";
echo $mils;


//


function currentLocale(): float
{
  return round(microtime(true) * 1000);
}

echo currentLocale();


function diffLocale(int|float $mils):string
{
  $sec = intval($mils /  1000);
 
  return date("Y-m-d H:i:s",$sec);
}

echo diffLocale(1697194230997);


// 


// ref: https://stackoverflow.com/q/52602031
function convertDateTime($date, $format = 'Y-m-d H:i:s')
{
    $tz1 = 'UTC';
    $tz2 = 'Asia/Jakarta'; // UTC +7

    $d = new DateTime($date, new DateTimeZone($tz1));
    $d->setTimeZone(new DateTimeZone($tz2));

    return $d->format($format);
}

$utcDateTime = diffLocale(1697196749233);

echo convertDateTime($utcDateTime);