/** @brief Calculates phalanx range.
 *  @param[in] int   $level         Level of the phalanx
 *  @param[in] array $user_class    User class ($user_data['user_class']=array('user_class'=>'COL'/GEN/EXP/none))
 *  @return int Range in system
 */
function ogame_phalanx_range($level, $user_class = 'none');