含碳时区之间的差异

CEST时间=UTC时间+2小时 但我的代码只显示了1小时,我不知道为什么。。。(您可以测试它 here )

require 'Carbon/Carbon.php';
use Carbon\Carbon;

$timestamp = '2018-04-06 14:30:00';
$date = Carbon::createFromFormat('Y-m-d H:i:s', $timestamp, 'UTC');
var_dump($date);
//{ ["date"]=> string(26) "2018-04-06 14:30:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } 
$date->tz('CEST');
var_dump($date);
//{ ["date"]=> string(26) "2018-04-06 15:30:00.000000" ["timezone_type"]=> int(2) ["timezone"]=> string(4) "CEST" }