3v4l.org

run code in 500+ 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:
41.69 ms | 1954 KiB | 5 Q