W3School TIY Editor
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暗黑模式
<!DOCTYPE html> <html> <body> <?php $winter=date_create("2016-10-15",timezone_open("America/New_York")); $summer=date_create("2016-01-28",timezone_open("America/New_York")); echo date_offset_get($winter) . " 秒。<br />"; echo date_offset_get($summer) . " 秒。"; ?> </body> </html>