PHP solves server US time problem

The speed of foreign servers is okay, and there is no need to register or anything. However, I found a problem in the past two days. The time of calling the output is not correct. They are all using American time. This is a problem. For example, today is April. 2nd, but the page shows April 1st, which is not good. I checked the information and found that the code is very easy to use. Share it:

$date = putenv('TZ=America/Chicago ');
mktime(0,0,0,1,1,1970) ;
echo date("Y-m-d H:i:s");

When using it, change "TZ=America/Chicago" to Your local time zone, such as "TZ=Asia/Shanghai"

The above introduces how PHP solves the problem of server US time, including aspects of the problem. I hope it will be helpful to friends who are interested in PHP tutorials.