3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr(substr('8qQpro+ABfT4aXOK7kb5u3Sm=VWJLw6E1GY0xDteyl/ZPid2M9NzcnCRFIUhHgsvj', 10, 0), 0, -10) === substr('8qQpro+ABfT4aXOK7kb5u3Sm=VWJLw6E1GY0xDteyl/ZPid2M9NzcnCRFIUhHgsvj', 10, -10)); var_dump(substr(substr('8qQpro+ABfT4aXOK7kb5u3Sm=VWJLw6E1GY0xDteyl/ZPid2M9NzcnCRFIUhHgsvj', 10, 0), 0, -10) === substr('8qQpro+ABfT4aXOK7kb5u3Sm=VWJLw6E1GY0xDteyl/ZPid2M9NzcnCRFIUhHgsvj', 10, -20));

preferences:
42.01 ms | 402 KiB | 5 Q