Unique random salt

Archives Yii 1.0.x Discussions
1

I have the below function in a model and I want to add code to check that is unique and if not to generate another salt. What do i need to do?

private function randomSalt($length)


	{


        $chars = "abcdefghijkmnopqrstuvwxyz023456789";


        srand((double)microtime()*1000000);


        $i = 0;


        $salt = '' ;





        while ($i <= $length)


        {


            $num = rand() % 33;


            $tmp = substr($chars, $num, 1);


            $salt .= $tmp;


            $i++;


        }


        return $salt;


    }
2

You want to compare it to the database and see if you already have it?

3

Correct. If string is unique return true otherwise try again until function returns true

4 


public function isUnique($key) {


 $condition = "key = :key";


 $params = array();


 $params['key'] = $key;


 $result = YourModel::model()->find($condition, $params);


 if ($result == null) {


   return true


 }


 return false;


}
5

Looks good !

6

I cant get it too work.

Could you please write a complete example. Thanks in advance

7

What does the error message say?

The function above should be in a Model and 'YourModel' should be replaced accordingly.