PHP nav::nav_show示例

 /**
  * 设置当前页面的导航栏
  * @param int    $num   选定导航选项卡的编号
  * @param string $title 在顶部导航后追加的导航，一般是这个选定导航选项卡的内部页面，此时导航选项卡会影藏。
  */
 public static function select_nav($num, $title = '')
 {
     global $_M;
     foreach (self::$navlist as $key => $val) {
         self::$navlist[$key]['classnow'] = '';
         self::$navlist[$key]['nav'] = '';
     }
     self::$navlist[$num]['classnow'] = "class='now'";
     if ($title) {
         self::$navlist[$num]['nav'] = ' > <a href="' . self::$navlist[$num]['url'] . '">' . self::$navlist[$num]['title'] . '</a> > ' . $title . "<div class='return'><a href='javascript:history.go(-1);'><i class='fa fa-chevron-left'></i>{$_M['word']['js55']}</a></div>";
         self::$nav_show = 0;
     } else {
         self::$navlist[$num]['nav'] = ' > ' . self::$navlist[$num]['title'];
         self::$nav_show = 1;
     }
 }