Php/docs/radius.constants.options
From Get docs
RADIUS Options
Several RADIUS functions accept option flags as bitmasks. The constants representing those flags are listed below.
RADIUS_OPTION_SALT(int)- When set, this option will result in the attribute value being salt-encrypted.
RADIUS_OPTION_TAGGED(int)- When set, this option will result in the attribute value being tagged with the value of the tag parameter.
