Hash::needsRehash PHP Method

        public static function needsRehash($hashedValue, $options = array())
        {
            return \Illuminate\Hashing\BcryptHasher::needsRehash($hashedValue, $options);
        }

 /**
  * Set the user's password.
  *
  * @param  string  $value
  *
  * @return string
  */
 public function setPasswordAttribute($value)
 {
     if (\Hash::needsRehash($value)) {
         $value = bcrypt($value);
     }
     $this->attributes['password'] = $value;
 }