//SELECT CASE WHEN LENGTH(title)>8 THEN LEFT(title,8)+’…’ ELSE title END AS title,hits FROM `article_1` ORDER BY hits DESC LIMIT 0,10;—-当标题长度大于8时,取左边的8个字,后面加”…” 否则显示标题.

//SELECT left(title,8) AS title,hits,linkurl FROM `article_1` WHERE date(`addtime`)=curdate()-1 ORDER BY hits DESC LIMIT 0,10;—左边的8个字作为标题. 查询昨天的.

//SELECT * FROM `article_1` WHERE DATE_FORMAT(FROM_UNIXTIME(`addtime`),’%Y-%m-%d’) = DATE_FORMAT(NOW(),’%Y-%m-%d’)-1; –Uinx 时间戳　查询昨天的(查询出来跟上面的一条好像有点不同,具体忘了.)

//SELECT * FROM `article_1` WHERE DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= date(`addtime`);—-查询一周的.

//SELECT * FROM `article_1` WHERE `addtime` BETWEEN UNIX_TIMESTAMP(now()) – 86400*7 AND UNIX_TIMESTAMP(now());—-一周.

//SELECT * FROM `article_1` WHERE DATE_SUB(CURDATE(), INTERVAL 1 MONTH) <= date(`addtime`);—查询一个月的.

//SELECT * FROM `article_1` WHERE `addtime` BETWEEN UNIX_TIMESTAMP(now()) – 86400 AND UNIX_TIMESTAMP(now());—-一天.

//—unix时间戳转换成标准时间(c#)—//
/*
string timeStamp = “1144821796″;
DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970,1,1));
long lTime = long.Parse(timeStamp + “0000000″);
TimeSpan toNow = new TimeSpan(lTime);
DateTime dtResult = dtStart.Add(toNow);

//将标准时间转换成UNIX时间戳(c#)—//
DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970,1,1));
DateTime dtNow = DateTime.Parse(DateTime.Now.ToString());
TimeSpan toNow = dtNow.Subtract(dtStart);
string timeStamp = toNow.Ticks.ToString();
timeStamp = timeStamp.Substring(0,timeStamp.Length – 7);
*/
//—unix时间戳转换成标准时间—//

#endregion

Sql语句都是mySql的.

PS: .net要用mySql做为数据库的话要下载一个动态链接库MySql.Data.dll并,添加进去.

前段时间用到的,先贴出来.备忘.
来源：http://hi.baidu.com/fmqc/blog/item/1f9ef6dd0c436be877c63862.html

iconv(”UTF-8″,”GB2312//IGNORE”,$data)

ignore的意思是忽略转换时的错误，如果没有ignore参数，所有该字符后面的字符串都无法被保存。

这个转换的意思是把utf8字符转换成gb2312，$data为被转换的字符。

PHP中有两个内建的函数：count() 和sizeof()，可以实现得到数组的长度
$colorList = array(”apple”=>”red”, “grass”=>”green”, “sky”=>”blue”, “night”=>”black”, “wall”=>”white”);
echo “Array size with count: “.count($colorList);