在PHP中添加时间 [英] Adding time in PHP
问题描述
我从mysql数据库中提取datetime,我想添加X小时,然后将其与当前时间进行比较。到目前为止我有
I am pulling a datetime from a mysql db and i would like to add X hours to it then compare it to the current time. So far i got
$dateNow = strtotime(date('Y-m-d H:i:s'));
$dbTime = strtotime($row[0]);
然后我尝试$ dbTime + strtotime(4小时);但4小时似乎添加4小时的当前时间,而不是原始的4小时。如何添加X小时到dbTime?
then i tried $dbTime + strtotime("4 hours"); but 4 hours seem to add 4hrs to the current time instead of raw 4hours. How do i add X hours to dbTime?
注意:我使用的是php 5.1.2所以date_add不工作(5.3.0)
NOTE: I am using php 5.1.2 so date_add doesnt work (5.3.0)
time()和strtotime()结果以秒为单位的unix时间戳,所以你可以做类似下面的事情,提供你的数据库并做比较:
p>
time() and strtotime() result in unix timestamps in seconds, so you can do something like the following, provided your db and do your comparison:
$fourHours = 60 * 60 * 4;
$futureTime = time() + $fourHours;
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