Password Hashing
PHP Manual

Constantes pré-definidas

As constantes listadas abaixo estão sempre disponíveis como parte do núcleo do PHP.

PASSWORD_BCRYPT (integer)
PASSWORD_BCRYPT is used to create new password hashes using the CRYPT_BLOWFISH algorithm.
PASSWORD_DEFAULT (integer)
The default algorithm to use for hashing if no algorithm is provided. This may change in newer PHP releases when newer, stronger hashing algorithms are supported.


Password Hashing
PHP Manual