setTime() replacement in php [closed]

I want to convert below javascript code to PHP

<script>    
     noon = new Date();
     alert(noon);
     noon.setTime(1641951202187.3433);
     alert(noon);   
</script>

returning value Wed Jan 12 2022 07:03:22 GMT+0530 (India Standard Time)

As in javascript setTime() function Add 1641951202187.3433 milliseconds to January 1, 1970. But i am unable to find such function in php or solution

Answer

First of all, you need to convert milliseconds to seconds and then use the date() function with the following format:

$mili = 1641951202187.3433;
$sec = $mili /1000;
echo date('M-m-Y H:i:s',$sec);