1--TEST-- 2date_default_timezone_set() function [1] 3--SKIPIF-- 4<?php 5if (substr(PHP_OS, 0, 3) == 'WIN') die('skip diff TZ detection on windows.'); 6?> 7--INI-- 8date.timezone= 9--FILE-- 10<?php 11 putenv("TZ="); 12 $date1 = strtotime("2005-01-12 08:00:00"); 13 $date2 = strtotime("2005-07-12 08:00:00"); 14 date_default_timezone_set("America/Indiana/Knox"); 15 $date3 = strtotime("2005-01-12 08:00:00"); 16 $date4 = strtotime("2005-07-12 08:00:00"); 17 18 echo date_default_timezone_get(), "\n"; 19 echo date(DATE_ISO8601, $date1), "\n"; 20 echo date(DATE_ISO8601, $date2), "\n"; 21 echo date(DATE_ISO8601, $date3), "\n"; 22 echo date(DATE_ISO8601, $date4), "\n"; 23?> 24--EXPECTF-- 25Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in %sdate_default_timezone_set-1.php on line 3 26 27Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in %sdate_default_timezone_set-1.php on line 4 28America/Indiana/Knox 292005-01-12T03:00:00-0500 302005-07-12T03:00:00-0500 312005-01-12T08:00:00-0500 322005-07-12T08:00:00-0500 33