Predefined Constants
RADIUS Packet Types
Predefined Constants
PHP Manual

## RADIUS Options

Several RADIUS functions accept option flags as bitmasks. The constants representing those flags are listed below.

`RADIUS_OPTION_SALT` (integer)

  When set, this option will result in the attribute value being salt-encrypted.

`RADIUS_OPTION_TAGGED` (integer)

  When set, this option will result in the attribute value being tagged with the value of the tag parameter.