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PageRank（PR值）

威海链接原理威海PR
1009

PageRank是沉迷Google的人们用来测验其站点在Google中的排名的一种衡量规范，SEO和查找引擎营销（SEM）专家也运用这个术语描绘网页在SERP中的排名以及Google依据排名算法给予站点的分数，无论怎么界说，PageRank都是SEO的重要部分。

Public @ 2010-02-23 15:39:10

Google PageRank的计算源代码

威海链接原理威海PR
1224

最近对google的PageRank(网页等级)比较感兴趣，一直想知道如何不用google toolbar来获取pr值。苦苦搜索之后,找到如下代码:<?php/**This code is released unto the public domain*///header("Content-Type: text/plain; charset=utf-8");define(

Public @ 2022-12-07 15:39:09

Google链接分析专利

商业周刊今天发表一篇文章谈搜索引擎市场的竞争情况。Matt Cutts很快发了个贴子评论了下。搜索引擎各自的商业模式，关注点和优缺点就不多说了。引起我兴趣的是Matt Cutts特意提到一个Google链接分析的专利。这个专利是Google在2001年申请，2003年2月批准的，美国专利号号6526440。Google和其他搜索引擎公司都有大把的专利，但拿出来谈的很少，哪些已经用在排名算法里外人就

Public @ 2017-10-08 16:21:56

了解什么是PR

威海链接原理威海PR
1585

PR是Google排名算法的200多个因素之一，而且重要性已经下降很多。当然，PR还是Google排名算法中的重要因素之一。除了直接影响排名，PR的重要性还体现以下几点。（1）网站收录深度和总页面数。搜索引擎蜘蛛爬行时间及数据库的空间都是有限的。对大中型网站来说，首页PR值是带动网站收录的重要因素之一。（2）更新频率。PR值越高的网站，搜索引擎蜘蛛访问得就越频繁，网站上出现新页面或旧页面上内容更新

Public @ 2020-03-21 15:39:10

Google PageRank的计算源代码

威海链接原理威海PR
1224

最近对google的PageRank(网页等级)比较感兴趣，一直想知道如何不用google toolbar来获取pr值。苦苦搜索之后,找到如下代码:<?php/**This code is released unto the public domain*///header("Content-Type: text/plain; charset=utf-8");define(

Public @ 2022-12-07 15:39:09

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.020081s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.014840s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1566 LIMIT 1 [ RunTime:0.013725s ]
[ 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:0.013981s ]
[ 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:0.014060s ]
[ 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:0.014182s ]
[ 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` = 1566 LIMIT 1 [ RunTime:0.013471s ]
[ 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+2 where id=1566 [ RunTime:0.014414s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海链接原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.031441s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海链接原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.038893s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海PR' AND `status` <> -1 LIMIT 1 [ RunTime:0.024562s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海PR' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.029388s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.443528s

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