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