Method IsValid

php/src/vaas/Sha256.php:63–72

* Validates a hash to be a valid sha256 * @param string $hash the string to validate * @return Future that resolves as true if sha256 is valid */

(string $hash)

     * @return Future that resolves as true if sha256 is valid
     */
    public static function IsValid(string $hash): Future
    {
        return async(function () use ($hash) {
            if (preg_match("/^([a-f0-9]{64})$/", strtolower($hash)) == 1) {
                return true;
            } else {
                return false;
            }
        });
    }
            

    public function __toString(): string