PHP Manual
Password Hashing Functions
Returns information about the given hash

password_get_info

(PHP 5 >= 5.5.0, PHP 7)

password_get_info — Returns information about the given hash

Description

password_get_info ( string $hash ) : array

When passed in a valid hash created by an algorithm supported by password_hash(), this function will return an array of information about that hash.

Parameters

hash: A hash created by password_hash().

Return Values

Returns an associative array with three elements:

algo, which will match a password algorithm constant
algoName, which has the human readable name of the algorithm
options, which includes the options provided when calling password_hash()