php哈希加密和验证

 self::COST]);
		if(password_needs_rehash($passwordHash, self::HASH, ['cost'=>self::COST])){
			$passwordHash = self::hash($password);
		}
		return $passwordHash;
	}

	public static function verify($password, $passwordHash){
		if(password_verify($password, $passwordHash)) return true;
		return false;
	}
}