3v4l.org

run code in 300+ PHP versions simultaneously
<?php $_1week = new DateInterval("P1W"); $_7days = new DateInterval("P7D"); var_dump($_1week == $_7days); var_dump($_1week); var_dump($_1week == $_7days); var_dump($_7days); var_dump($_1week == $_7days);

preferences:
52.36 ms | 1961 KiB | 5 Q