Non รจ necessaria nessuna installazione per usare queste funzioni, esse fanno parte del core di PHP.
To enable Argon2 password hashing, however, PHP must be built with libargon2 support using the --with-password-argon2 configure option.
Prior to PHP 8.1.0, it was possible to specify the argon2 directory with --with-password-argon2[=DIR].