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经典正则表达式

（1）验证邮箱： ^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$ （2）验证身份证： ^\d{15}|\d{18}$ （3）验证电话号码： ^0\d{2,3}-\d{5,9}$

Public @ 2023-03-02 12:48:07

Z-Blog多服务器平衡负载的方法

威海网站建设威海Z-blog
2608

对于Z-Blog访问量比较大的时候，往往会造成服务器负载和流量过大，引起性能问题，相关的解决流量的对策我以前也讨论过，根据我的分析，不少流量都是由于图片或下载等引起的，因此可以通过将下载文件夹upload放在另外一台服务器的方法进行负载均衡。具体方法是，设定一个新的服务器网站地址（独立服务器或者申请的免费空间都可以），例如download.williamlong.info，在这个新服务器网站上建立

Public @ 2012-08-12 15:44:57

新手建站初期应该避免的几大陷阱

第一次建站的朋友总会碰到磕磕绊绊才能慢慢成长，由于急功近利，很多的时候，我们会做一些错误的操作，轻则导致网站被降权，重则导致网站被封杀。笔者是从去年开始建站的，中途建设了一系列大大小小的网站，其中最富有学习价值的是一个影视网站，从优化这个网站的过程中，我学习到了一系列宝贵的知识，笔者相信，如果新手知道我所获得的心得体会一定能少走很多弯路，为此，我讲自己体会到的心得分享给大家，希望对初期建站的朋友能

Public @ 2021-06-14 16:14:34

揭开正则表达式的神秘面纱

[原创文章，转载请保留或注明出处：http://www.regexlab.com/zh/regref.htm]引言正则表达式（regular expression）描述了一种字符串匹配的模式，可以用来：（1）检查一个串中是否含有符合某个规则的子串，并且可以得到这个子串；（2）根据匹配规则对字符串进行灵活的替换操作。正则表达式学习起来其实是很简单的，不多的几个较为抽象的概念也很容易理解。之所以很多人

Public @ 2012-07-07 16:14:31

经典正则表达式

以下是一些经典的正则表达式： 1. 匹配邮箱地址： ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ 2. 匹配电话号码： ^(?:\(\d{3}\)|\d{3})[- ]?\d{3}[- ]?\d{4}$ 3. 匹配 IP 地址： ^([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|

Public @ 2023-04-23 15:50:16

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[ DB ] CONNECT:[ UseTime:0.029759s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.021976s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6163 LIMIT 1 [ RunTime:0.020170s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.020334s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.020550s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.021034s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6163 LIMIT 1 [ RunTime:0.019905s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=6163 [ RunTime:0.023209s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.027447s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.047399s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海正则表达式' AND `status` <> -1 LIMIT 1 [ RunTime:0.027707s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海正则表达式' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.061059s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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