三分钟之内是否有请求的短信验证码
select *
from `smscode`
where smscode_mobile='$mobile'
and timestampdiff(minute,smscode_addtime,now())<=3
三分钟之内是否有请求的短信验证码
select *
from `smscode`
where smscode_mobile='$mobile'
and timestampdiff(minute,smscode_addtime,now())<=3