On Ubutu:
If you get 0.system for the version, this means you have the version that PHP shipped with. For a newer version, you must upgrade via the PECL extension (sudo pecl install timezonedb)
http://pecl.php.net/package/timezonedb
timezone_version_get
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
timezone_version_get — 获取 timezonedb 的版本
说明
timezone_version_get(): string
返回当前 timezonedb 的版本。
返回值
返回一个 string。
范例
示例 #1 获取 timezonedb 版本
<?php
echo timezone_version_get();
?>
以上例程的输出类似于：
2009.7
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User Contributed Notes 2 notes
Omar ¶
12 years ago
chupaka at gmail dot com ¶
3 years ago
On Ubuntu:
If you get '0.system' for the version, this means PHP is using system version of timezone database. For a newer version, simply upgrade 'tzdata' package without installing any PECL extensions:
sudo apt update
sudo apt install tzdata
