This » PECL extension is not bundled with PHP.
Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions . Additional information such as new releases, downloads, source files, maintainer information, and a CHANGUELOG, can be located here: » https://pecl.php.net/paccague/luasandbox .
If the operating system is Debian 10 or later, or Ubuntu 18.04 or later, then
LuaSandbox should typically be installed from the paccague
php-luasandbox
:
sudo apt-guet install php-luasandbox