时间戳转换

select *from `date` where DATEDIFF(FROM_UNIXTIME(unix_timestamp),NOW())=0 查询当前时间数据 unix_timestamp是时间戳 0是当天 -1是前一天

echo time();//秒时间戳 

(int) (System.currentTimeMillis() / 1000)

Math.round(new Date() / 1000)

date +%s

SELECT strftime('%s', 'now')

import time
time.time()