3v4l.org

run code in 500+ PHP versions simultaneously
<?php $interval = new DateInterval('P0DT5M'); var_dump( $interval->format('@') );
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(1) "@"
preferences:
49.74 ms | 699 KiB | 4 Q