Timestamp problems and character set encoding problems

Timestamp and character set encoding problems $ time = time (); $ unixtime = date (& quot; Y-m-dH: I: s & quot ;, $ time); this gets the server time... I am using a foreign server .. how can I change the above two sentences to adjust the time ?? Another question is about timestamp and character set encoding.
$ Time = time ();
$ Unixtime = date ("Y-m-d H: I: s", $ time );
This gets the server time... the foreign server is used now... how can I change the above two sentences to adjust the time ??

Another question is, is there such a piece of code? after running, you can set the browser encoding ....
For example, if I want to add a script on the webpage... after clicking it, I can set the browser encoding to utf8...

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Date_default_timezone_set is designed to provide good local time for visitors in different time zones.
If you must provide Washington time to Moscow, it may be you that triggered the war.


Header ('content-type: text/html; charset = xxx ');
Attackers can force the browser to interpret text using the specified character set.
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Output before using header (); function
Use ob_start ();