mcal_event_add_attribute
(PHP 3>= 3.0.15, PHP 4 )
mcal_event_add_attribute -- Adds an attribute and a value to the streams global event structureDescription
void mcal_event_add_attribute ( int stream, string attribute, string value)mcal_event_add_attribute() adds an attribute to the stream's global event structure with the value given by "value".