https://blog.youkuaiyun.com/Hsn_linzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/Hsn_lin/article/details/7644127https://blog.youkuaiyun.com/Hsn_lin/article/details/7644127Hsn_linFri, 08 Jun 2012 09:34:36 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/7591704https://blog.youkuaiyun.com/Hsn_lin/article/details/7591704Hsn_linTue, 22 May 2012 17:04:57 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/7257823https://blog.youkuaiyun.com/Hsn_lin/article/details/7257823Hsn_linTue, 14 Feb 2012 13:39:01 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6957244https://blog.youkuaiyun.com/Hsn_lin/article/details/6957244Hsn_linThu, 10 Nov 2011 18:00:43 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6832827https://blog.youkuaiyun.com/Hsn_lin/article/details/6832827Hsn_linThu, 29 Sep 2011 10:06:57 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6614583https://blog.youkuaiyun.com/Hsn_lin/article/details/6614583Hsn_linMon, 18 Jul 2011 16:21:45 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6614503https://blog.youkuaiyun.com/Hsn_lin/article/details/6614503Hsn_linMon, 18 Jul 2011 15:55:58 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6558757https://blog.youkuaiyun.com/Hsn_lin/article/details/6558757Hsn_linTue, 21 Jun 2011 15:06:00 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6556892https://blog.youkuaiyun.com/Hsn_lin/article/details/6556892Hsn_linMon, 20 Jun 2011 18:07:00 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6532431https://blog.youkuaiyun.com/Hsn_lin/article/details/6532431Hsn_linWed, 08 Jun 2011 18:07:00 +0800新建窗口，这样新建的窗口也有SESSION．　　MyIE中的创建窗口都类似　IE中的在同一窗口点击文件->新建窗口，所以只要输入正]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6525190https://blog.youkuaiyun.com/Hsn_lin/article/details/6525190Hsn_linFri, 03 Jun 2011 17:14:00 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6417709https://blog.youkuaiyun.com/Hsn_lin/article/details/6417709Hsn_linFri, 13 May 2011 16:34:00 +0800检查下allow_url_fopen是否开启
另外如果file_get_contents()访问的是本地php文件
需要在服务器上将127.0.0.1指向这个url
 ]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6409600https://blog.youkuaiyun.com/Hsn_lin/article/details/6409600Hsn_linTue, 10 May 2011 16:51:00 +0800会移动的文字(Marquee)
 
啦啦啦，我从右向左移！
啦啦啦，我从左向右移！
 

啦啦啦，我一圈一圈绕着走！
啦啦啦，我只走一次就歇了！ <]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6372219https://blog.youkuaiyun.com/Hsn_lin/article/details/6372219Hsn_linFri, 29 Apr 2011 15:49:00 +0800empty是用来判断一个值是否为空
$array = array('');
if (empty($array))
{
 echo "数组为空";
}
else
{
 echo "数组不为空";
}
?>
从这里可以看出 输出的是“数组不为空”虽然$array中的元素是空，但并不表示$array这个数组为空]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6298835https://blog.youkuaiyun.com/Hsn_lin/article/details/6298835Hsn_linSat, 02 Apr 2011 17:02:00 +0800http://bbs.php100.com/read-htm-tid-14439.html
可能会出现乱码问题
在htm界面里面加上编码即可]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6293836https://blog.youkuaiyun.com/Hsn_lin/article/details/6293836Hsn_linFri, 01 Apr 2011 11:28:00 +0800首先，说说MySQL的索引存储方式。MySQL的索引一般是B-Tree的结构存储的，内存表也有Hash索引，但是内存表的出镜率似乎已经低到了用“可怜”来形容的程度，所以我们只考虑B-Tree索引。
然后说说MySQL的联合索引。联合索引对于一个DBMS总是非常重要的，因为每一条SQL语句的条件子句是单条件的可能性很小，大多数情况下为组合条件，因此对于组合索引的依赖也就很强。MySQL对于联合索引的创建规则通过一个例子说明：
对于一个在列：col_a, col_b和col_c上]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6278542https://blog.youkuaiyun.com/Hsn_lin/article/details/6278542Hsn_linFri, 25 Mar 2011 18:27:00 +0800我们有时候获取将字符串写入到文件里面去可以运用这两个函数
1,file_put_contents($file_name,$string),file_put_contents($file_name,$string,FILE_APPEND)
2.filesize($file_name)
这两个函数搭配在一起运用时事没有问题的
但是如果将这两个函数在一个循环中使用的话，会出现filesize($file_name)读取到的文件大小并不是实际文件的大小
]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6256416https://blog.youkuaiyun.com/Hsn_lin/article/details/6256416Hsn_linThu, 17 Mar 2011 15:27:00 +0800在使用file_get_contents抓取网站时，可能会出现file_get_contents(): failed to open stream: HTTP request failed!这个警告信息，这里有两种方法
1.修改php.ini文件，把allow_url_fopen给启用，改成 allow_url_fopen = On，这样做可以解决某些人的问题，有人说在php.ini中，有这样两个选项:allow_url_fopen =on(表示可以通过url打开远程文件)，user_]]>https://blog.youkuaiyun.com/Hsn_lin/article/details/6256274https://blog.youkuaiyun.com/Hsn_lin/article/details/6256274Hsn_linThu, 17 Mar 2011 14:53:00 +0800https://blog.youkuaiyun.com/Hsn_lin/article/details/6254376https://blog.youkuaiyun.com/Hsn_lin/article/details/6254376Hsn_linWed, 16 Mar 2011 18:45:00 +0800这里的混合字符串意思是中文和英文混合
如果用substr这个函数截取，它是按照字符来截取的
一个字母是一个字符，而中文字符又有编码问题
utf-8的中文是3个字符，其它的据我测试过都是2个字符
所以如果用substr来截取的话会出现乱码问题
 
 
解决办法
用mb_strcut函数来截取，首先要在php.ini文件中开启，extension=php_mbstring.dll
这个函数比substr多一个参]]>