Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > body text

Discuss the specific methods of implementing on-site search engines in PHP_PHP Tutorial

WBOY
Release： 2016-07-15 13:29:44
Original
1105 people have browsed it

In actual coding, we can use The following is the specific code to implement the on-site search engine in PHP: 

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><font color="#006699"><?</FONT></STRONG></SPAN><SPAN>   </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag-name><STRONG><FONT color=#006699>include</FONT></STRONG></SPAN><SPAN>("include/common.inc");   </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>title</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>"Search"</FONT></SPAN><SPAN>;   </SPAN></SPAN><LI class=""><SPAN>include("include/header.inc");   </SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></font></strong></span><span>   </span></span></li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>P</SPAN><SPAN class=tag>></span></font></strong><span>   </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>FORM</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>ACTION</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"<? echo "</FONT></SPAN><SPAN>$PHP_SELF"; </SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></span></font></strong><span>" </span><span class="attribute"><font color="#ff0000">METHOD</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"POST"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>INPUT</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>TYPE</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"text"</FONT></SPAN><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>NAME</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"searchstr"</FONT></SPAN><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>value</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"<? echo "</FONT></SPAN><SPAN>$searchstr"; </SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></span></font></strong><span>"   </span>
</li>
<li class="alt">
<span></span><span class="attribute"><font color="#ff0000">SIZE</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"20"</font></span><span> </span><span class="attribute"><font color="#ff0000">MAXLENGTH</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"30"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>INPUT</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>TYPE</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"submit"</FONT></SPAN><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>VALUE</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"Search!"</FONT></SPAN><SPAN class=tag><STRONG><FONT color=#006699>></span></font></strong><span>   </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>FORM</SPAN><SPAN class=tag>></span></font></strong><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>P</SPAN><SPAN class=tag>></span></font></strong><span>   </span>
</li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699"><?</FONT></STRONG></SPAN><SPAN>   </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag-name><STRONG><FONT color=#006699>if</FONT></STRONG></SPAN><SPAN> ( ! empty($searchstr) )   </SPAN></SPAN><LI class=alt><SPAN>{   </SPAN><LI class=""><SPAN>// empty()用来检查查询字串是否为空   </SPAN><LI class=alt><SPAN>// 如果不为空，调用grep查询   </SPAN><LI class=""><SPAN>echo "</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>HR</SPAN><SPAN class=tag>></font></strong></span><span>n";   </span>
</li>
<li class="alt"><span>// 调用grep对所有文件进行大小写非敏感模式的查询   </span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">cmdstr</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"grep -i $searchstr *"</font></span><span>;   </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">fp</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">popen</font></span><span>( $cmdstr, "r" ); // 执行命令并输出管道   </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">myresult</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">array</font></span><span>(); // 存储查询结果   </span>
</li>
<li class="alt">
<span>while( $</span><span class="attribute"><font color="#ff0000">buffer</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">fgetss</font></span><span> ($fp, 4096))   </span>
</li>
<li class=""><span>{   </span></li>
<li class="alt"><span>// grep返回这样格式： 文件名：匹配字串出现行数   </span></li>
<li class=""><span>// 因此我们利用函数split()分离处理数据   </span></li>
<li class="alt"><span>list($fname, $fline) = split(":",$buffer, 2);   </span></li>
<li class=""><span>// 我们只输出第一次匹配的结果   </span></li>
<li class="alt"><span>if ( !defined($myresult[$fname]))   </span></li>
<li class=""><span>$myresult[$fname] = $fline;   </span></li>
<li class="alt"><span>}   </span></li>
<li class=""><span>// 现在我们将结果存储在数组中，下面就可以处理并输出了   </span></li>
<li class="alt"><span>if ( count($myresult) )   </span></li>
<li class=""><span>{   </span></li>
<li class="alt">
<span>echo "</span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>OL</SPAN><SPAN class=tag>></span></font></strong><span>n";   </span>
</li>
<li class=""><span>while(list($fname,$fline) = each($myresult))   </span></li>
<li class="alt">
<span>echo "</span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>LI</SPAN><SPAN class=tag>></span></font></strong><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>A</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>HREF</FONT></SPAN><SPAN>="$fname"</SPAN><SPAN class=tag><STRONG><FONT color=#006699>></span></font></strong><span>$fname</span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>A</SPAN><SPAN class=tag>></span></font></strong><span> : $fline </span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>LI</SPAN><SPAN class=tag>></span></font></strong><span>n";   </span>
</li>
<li class="alt">
<span>echo "</span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>OL</SPAN><SPAN class=tag>></span></font></strong><span>n";   </span>
</li>
<li class=""><span>}   </span></li>
<li class="alt"><span>else   </span></li>
<li class=""><span>{   </span></li>
<li class="alt"><span>// 如果没有查询结果   </span></li>
<li class="">
<span>echo "Sorry. Search on </span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>B</SPAN><SPAN class=tag>></span></font></strong><span>$searchstr</span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>B</SPAN><SPAN class=tag>></span></font></strong><span>   </span>
</li>
<li class="alt">
<span>returned no results.</span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>BR</SPAN><SPAN class=tag>></span></font></strong><span>n";   </span>
</li>
<li class=""><span>}   </span></li>
<li class="alt"><span>pclose($fp);   </span></li>
<li class=""><span>}   </span></li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699"><?</FONT></STRONG></SPAN><SPAN>   </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag-name><STRONG><FONT color=#006699>include</FONT></STRONG></SPAN><SPAN>("include/footer.inc");   </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><STRONG><FONT color=#006699>?></font></strong></span><span>  </span>
</li>
</ol>
Copy after login

How about, through the understanding of the above code, whether the novices have mastered PHP to implement the on-site search engine What is the specific method?


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446340.htmlTechArticleIn actual coding, we can use the following specific code to implement the on-site search engine in PHP: ? include (" include/common.inc"); $ title = "Search" ; include("include/header....
Related labels：
php specific use Can exist accomplish actual us Discuss search engine method of coding
source：php.cn
Previous article：Introduction to the specific method of PHP function Ksort() to sort arrays by keywords_PHP Tutorial Next article：Detailed explanation of the functions of PHP file system related functions_PHP tutorial
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
Compare Imagick, Adobe Photoshop and Windows - Detect resolution (pixels per centimeter or pixels per inch) This is not a question but an attempt to improve my understanding of how DPI is stored in ...
From 2024-04-06 16:01:27
0
1
397
Explore whether the pointer to the React component instance can be obtained outside the constructor Consider this React component: importReact,{Component}from'react'classFrameextendsComponen...
From 2024-04-02 22:07:22
0
1
318
Explore the functionality of the "next" function in Express middleware and its role in redirecting to another function. I'm new to Nodejs and working on Expressjs and now I'm working on "middleware functio...
From 2024-04-02 21:02:16
0
1
317
Explore the theory behind the event processing loop in Node.js I'm looking at this gist describing file walking algorithms in JavaScript //ES6 version us...
From 2024-04-01 19:35:24
0
1
273
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template