&reftitle.setup;
&reftitle.required; &no.requirement;

For Argon2 password hashing, libargon2 is required, though. As of PHP 7.3.0, libargon2 version 20161029 or later is required.

&reftitle.install; &no.install;

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]`.