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
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
timezone_version_get — Lit la version de la timezonedb
timezone_version_get() lit la version de la timezonedb.
Cette fonction ne contient aucun paramètre.
Retourne une chaîne de caractères.
Exemple #1 Lecture de la version de la timezonedb
<?php
echo timezone_version_get();
?>
Résultat de l'exemple ci-dessus est similaire à :
2009.7
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
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