There are two formatting functions for time in PHP: date() and gmdate(). The description in the official documentation is:
date -- format a local time/date
gmdate -- format a GMT /UTC date/time, returned is Greenwich Mean Time (GMT).
For example, our current time zone is +8, then the time returned by the server running the following script should be like this:
The current time is assumed to be 2007-03-14 12:15:27
echo date(' Y-m-d H:i:s', time()); The output is: 2007-03-14 12:15:27
echo gmdate('Y-m-d H:i:s', time()); The output is: 2007- 03-14 04:15:27
But this is only the result of running PHP under Linux+Apache. If it is run under Windows, the two functions return: 2007-03-14 04:15:27.
Therefore, we should give a compatible writing method and use gmdate uniformly. The writing method is improved as follows:
echo gmdate('Y-m-d H:i:s', time() + 3600 *;
This way, regardless of Linux+Apache Correct results are obtained under both Windows and Windows. Of course, there is another advantage to writing this way. When the website is for the whole world, the website user only needs to set the time zone, and the program automatically calculates the time based on the time zone set by the user. In the database The information release time only stores the time generated by the current time(). Then the release time seen in China +8 time zone is: 2007-03-14 12:15:27. Then users in Europe +2 time zone see this information. The release time is: 2007-03-14 06:15:27, so the time of the information will all correspond correctly