php unix timestamp to date

1<?php 
2echo date('m/d/Y H:i:s', 1541843467); 
3?> 

1<?php
2$timestamp=1333699439;
3echo gmdate("Y-m-d\TH:i:s\Z", $timestamp);
4?>

1$date = new DateTime();
2echo $date->getTimestamp();

1$currentTime = DateTime::createFromFormat( 'U', $timestamp );
2

1
2<?php
3$date = new DateTime();
4echo $date->format('U = Y-m-d H:i:s') . "\n";
5
6$date->setTimestamp(1171502725);
7echo $date->format('U = Y-m-d H:i:s') . "\n";
8?>
9
10