ParagonIE_Sodium_Compat::increment( string $var ): void

3696    public static function increment(3697        #[\SensitiveParameter]3698        &$var3699    ) {3700        /* Type checks: */3701        ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);3702 3703        if (self::useNewSodiumAPI()) {3704            sodium_increment($var);3705            return;3706        }3707        if (self::use_fallback('increment')) {3708            $func = '\\Sodium\\increment';3709            $func($var);3710            return;3711        }3712 3713        $len = ParagonIE_Sodium_Core_Util::strlen($var);3714        $c = 1;3715        $copy = '';3716        for ($i = 0; $i < $len; ++$i) {3717            $c += ParagonIE_Sodium_Core_Util::chrToInt(3718                ParagonIE_Sodium_Core_Util::substr($var, $i, 1)3719            );3720            $copy .= ParagonIE_Sodium_Core_Util::intToChr($c);3721            $c >>= 8;3722        }3723        $var = $copy;3724    }