Hướng dẫn php random string unique

How to make a random string unique to the string in the column below?

asked Mar 6 at 11:58

6

query("SELECT * FROM TABLE_NAME WHERE string='$string')")->num_rows;
        while($count != 0){
            $string = getName($length);
            $count  = $dbConnection->query("SELECT * FROM TABLE_NAME WHERE string='$string')")->num_rows;
        }
        return $string;
    }

    echo getUniqueString($n, $dbConnection);
?>

answered Mar 6 at 12:07

2

You can use openssl_random_pseudo_bytes() or random_bytes() PHP fonction to generate random strings.

You can also rely on MySQL to generate uniq IDs :

INSERT INTO mytable (alphaID) VALUES (REPLACE( UUID(), '-', '' )); 

answered Mar 6 at 14:26

AlaindeseineAlaindeseine

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