You can use:
NOW() + INTERVAL 1 DAY
If you are only interested in the date, not the date and time then you can use CURDATE instead of NOW:
CURDATE() + INTERVAL 1 DAY
better use quoted `data` and `date`. AFAIR these may be reserved wordsmy version is:
`data`
`date`
INSERT INTO `table` ( `data` , `date` ) VALUES('".$date."',NOW()+INTERVAL 1 DAY);
Try doing: INSERT INTO table(data, date) VALUES ('$data', now() + interval 1 day)
INSERT INTO table(data, date) VALUES ('$data', now() + interval 1 day)