w3 school convertet to timestamp in php code example
Example 1: php timestamp to date
<?php
echo date('m/d/Y H:i:s', 1541843467);
?>
Example 2: convert timestamp to date php
<?php
$date = new DateTime();
echo $date->format('U = Y-m-d H:i:s') . "\n";
$date->setTimestamp(1171502725);
echo $date->format('U = Y-m-d H:i:s') . "\n";
?>