[PHP] DateTimeZone

Symfony: why the backslash in \DateTime(); [duplicate]

\ 表示root  用來取得系統時間

https://stackoverflow.com/questions/41447845/symfony-why-the-backslash-in-datetime


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php 5.3 Fatal error Class DateTimeZone not found [duplicate]

$tZone = new \DateTimeZone("Europe/Amsterdam");

https://stackoverflow.com/questions/28568992/php-5-3-fatal-error-class-datetimezone-not-found