In php, "date_default_timezone_set()" can be used to set the United States time zone, and the syntax is "date_default_timezone_set('America/New_York')", where "America/New_York" represents the eastern United States.
The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer.
Create a new TimeZone.php file, as shown in the figure:
Declare the file type and encoding for PHP to interact with the browser, as shown in the figure:
The function of date_default_timezone_set() function: Set the default time zone, as shown in the figure:
will TimeZone.php is set to US time
date_default_timezone_set('America/New_York'); echo date('Y-m-d H:i:s');
Run the web page and you can see the US time, as shown in the picture:
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