&reftitle.setup;

&reftitle.required; &no.requirement; For Argon2 password hashing, either libargon2 is required or, as of PHP 8.4.0, OpenSSL version 3.2 or later. As of PHP 7.3.0, libargon2 version 20161029 or later is required if libargon2 is used.

&reftitle.install; &no.install; However, to enable Argon2 password hashing, PHP must be built either with libargon2 support using the --with-password-argon2 configure option or, starting from PHP 8.4.0, with OpenSSL using --with-openssl and --with-openssl-argon2. Prior to PHP 8.1.0, it was possible to specify the argon2 directory with --with-password-argon2[=DIR].