关于PHP 获取信息问题
<?php<br /> $baidu="http://www.baidu.com/s?wd=site%3Ahao123.com";<br /> $site=file_get_contents($baidu);<br /> $site= iconv("UTF-8","GB2312", $site);<br /> ereg("<title>(.*)</title>", $site,$count);<br /> print_r($count); //获取好主题在百度中的收录数量<br /> <br /> ?>
这个能获得结果:Array ( [0] => [1] => 百度搜索_site:hao123.com )
但是:
<?php<br /> $baidu="http://www.baidu.com/s?wd=site%3Ahao123.com";<br /> $site=file_get_contents($baidu);<br /> $site= iconv("UTF-8","GB2312", $site);<br /> ereg("<strong>(.*)</strong>", $site,$count);<br /> print_r($count); //获取好主题在百度中的收录数量<br /> <br /> ?>
这个就不行了。。。
求解释,还有怎么获得百度收录量。。。。
------最佳解决方案--------------------
<br /> preg_match('%<strong>找到相关结果数(.*?)个。</strong>%i', $site,$count);<br />
------其他解决方案--------------------
正则里面的"."匹配除"\n"外的任意一个字符,不能匹配中文。<br /> preg_match('%<strong>找到相关结果数(.*?)个。</strong>%i', $site,$count);<br /> 和下面的一样:
preg_match('/找到相关结果数(.*?)个。/i', $site,$count);
------其他解决方案--------------------
其实这种
preg_match('/<strong>找到相关结果数(.*)个。<\/strong>/i',$site,$count);
就可以了。
------其他解决方案--------------------
%找到相关结果数(.*?)个。%i关键是最后的那个“i”表示忽略大小写,如果不加“i”也就不需要“%”了
------其他解决方案--------------------
你讲的是位置匹配,跟我讲的不是一件事情
------其他解决方案--------------------
%只是正则的开始与结束符,你用/,#都可以的
------其他解决方案--------------------
正则的开始和结束不是^$第一次听说,受教……
------其他解决方案--------------------
学习了,不上很明白。。
------其他解决方案--------------------
上面写错了,"."可以匹配中文
------其他解决方案--------------------
这个问题主要把正则运用好,就可以出来了.
------其他解决方案--------------------
能告诉我为什么要加%吗?
------其他解决方案--------------------
该回复于2012-11-19 17:27:11被管理员删除

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

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PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

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