($sid) { session_delete(array('sid' => $sid)); session_data_delete(array('sid' => $sid)); return TRUE; } function sess_gc($maxlifetime) { global $time; $expiry = $time - $maxlifetime; $arrlist = session_find(array('last_date' => array('<' => $expiry)), array(), 1, 10000, '', array('sid', 'bigdata', 'last_date')); if (!$arrlist) return TRUE; $expiry = $time - 21600; // 超6小时未提交丢弃上传图片和附件 $sidarr = array(); foreach ($arrlist as $val) { if ($val['last_date'] > $expiry && $val['bigdata']) continue; $sidarr[] = $val['sid']; } if (empty($sidarr)) return TRUE; session_delete(array('sid' => $sidarr)); session_data_delete(array('sid' => $sidarr)); return TRUE; } function sess_start() { global $conf, $sid, $g_session; ini_set('session.name', $conf['cookie_pre'] . 'sid'); ini_set('session.use_cookies', TRUE); ini_set('session.use_only_cookies', TRUE); ini_set('session.cookie_domain', $conf['cookie_domain']); // 为空则表示当前目录和子目录 ini_set('session.cookie_path', $conf['cookie_path']); // 打开后只有通过 https 才有效 ini_set('session.cookie_secure', FALSE); ini_set('session.cookie_lifetime', 8640000); // 打开后 js 获取不到 HTTP 设置的 cookie, 有效防止 XSS,对于安全很重要,除非有 BUG,否则不要关闭。 ini_set('session.cookie_httponly', TRUE); // 活动时间 ini_set('session.gc_maxlifetime', $conf['online_hold_time']); // 垃圾回收概率 = gc_probability/gc_divisor ini_set('session.gc_probability', 1); // 垃圾回收时间 5 秒,在线人数 * 10 / 每1000个请求回收一次垃圾 ini_set('session.gc_divisor', 1000); session_set_save_handler('sess_open', 'sess_close', 'sess_read', 'sess_write', 'sess_destroy', 'sess_gc'); // register_shutdown_function 会丢失当前目录,需要 chdir(APP_PATH) $conf['url_rewrite_on'] > 1 and function_exists('chdir') and chdir(APP_PATH); // 这个必须有,否则 ZEND 会提前释放 $db 资源 register_shutdown_function('session_write_close'); session_start(); $sid = session_id(); return $sid; } // 刷新页面清理附件缓存 废弃 function sess_clear_attach() { global $sid, $time; $arr = session_read($sid); if (!$arr || 0 == $arr['bigdata']) return TRUE; session_update($sid, array('bigdata' => 0, 'last_date' => $time)); session_data_delete(array('sid' => $sid)); return TRUE; } function online_count() { return session_count(); } function online_list_cache() { static $cache = array(); $key = 'online_list'; if (isset($cache[$key])) return $cache[$key]; $cache[$key] = cache_get($key); if (NULL === $cache[$key]) { $cache[$key] = session_find(array('uid' => array('>' => 0)), array('last_date' => -1), 1, 1000); foreach ($cache[$key] as &$online) { $user = user_read_cache($online['uid']); $online['username'] = $user['username']; $online['gid'] = $user['gid']; $online['ip_fmt'] = safe_long2ip($online['ip']); $online['last_date_fmt'] = date('Y-n-j H:i', $online['last_date']); } cache_set('online_list', $cache[$key], 300); } return $cache[$key]; } function online_user_list_cache() { static $cache = array(); $key = 'online_user_list'; if (isset($cache[$key])) return $cache[$key]; $cache[$key] = cache_get($key); if (NULL === $cache[$key]) { $cache[$key] = session_find(array('uid' => array('>' => 0)), array(), 1, 1000, 'uid', array('uid')); cache_set('online_user_list', $cache[$key], 300); } return $cache[$key]; } ?>全国学生营养日 National Students Nutrition Day_英语作文|江阴雨辰互联

全国学生营养日 National Students Nutrition Day_英语作文

全国学生营养日 National Students Nutrition Day_英语作文


2024年5月1日发(作者:苹果6现在卖多少钱一台)

全国学生营养日 National Students Nutrition Day

National Students nutrition day is on May 20th, started from

1989, this day has made great contribution to the whole nation’

s students. The Chinese nutritionist Yu Ruomu, had made a ten

year project in order to enhance the nutritional status of the

whole national students. As we all know, human body needs enough

nutrition to function. As to the students, lack of nutrition

will lead to mental retardation, hyperactivity and so on. So

it is very important for us to eat different kinds of food.

从1989年开始,全国学生营养日定在每年的5月20日。这个节日为

中国广大的学生做出了极大的贡献。中国的营养学家于若木,为了提

高全国青少年的营养状况,制订了一个十年的营养计划。我们都知道,

人的身体需要足够的营养才能正常运转。对于学生来说,缺乏营养会

导致精神发育缓慢,多动症及其他症状。所以,吃不同的食物对我们

来说非常重要。According to the least survey, Chinese students

lack of Vitamin A, calcium, iron and zinc. Some children are

too particularly with food that they don’t eat staple food;

instead, they turn to different kinds of snacks. As a result,

they may become sick because lack of vitamins and other elements.

If we want to keep fit and keep the doctor away, we better do

——文章来源网,仅供分享学习参考

~ 1 ~

something.根据最新的调查显示,中国学生缺乏维生素A、钙、铁、

锌。一些孩子太挑食,都不吃主食,反倒去吃各种零食。结果就因为

缺乏维生素和其他微量元素,导致身体出现了问题。如果我们想身体

健康,不找医生,那我们最好注意饮食。First of all, we should eat

different kinds of fruits and vegetables. Do not eat too much

sweet or drink too much soft drinks. Early to bed and early to

rise, do more outdoor exercises; don’t play too many computer

games. Last but not least, take the body examination once a year.

If you have any problems, you can fix them immediately.

Prevention is better than cure. Only in these ways, we can stay

in good health.首先,我们要吃不同的蔬菜水果。不要吃太多的甜

食或者喝太多的软饮料。早睡早起,多做运动,别玩太多的电脑游戏。

最后,每年定期检查一次身体。如果身体有什么不适,立马去治疗。

预防胜于治疗。只有这样,我们才能有个好的身体。

——文章来源网,仅供分享学习参考

~ 2 ~


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