1<?php
2  require __DIR__ . '/autoload.php';
3
4  use function PHP81_BC\strftime;
5
6  $date = '20220312';
7  echo strftime('%Y-%m-%d %H:%M:%S'), PHP_EOL;
8  echo strftime('%Y-%m-%d %H:%M:%S', $date), PHP_EOL;
9  echo strftime('%Y-%m-%d %H:%M:%S', strtotime($date)), PHP_EOL;
10