探讨PHP实现站内搜索引擎的具体方法
phpspecificuseCanexistaccomplishactualusDiscusssearch enginemethodofcoding
我们在实际的编码中，可以利用以下就是PHP实现站内搜索引擎的具体代码：
<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><font color="#006699"></font></strong></span><span> </span></span></li>
<li class="">
<span></span><span class="tag-name"><strong><font color="#006699">include</font></strong></span><span>("include/common.inc"); </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">title</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"Search"</font></span><span>; </span>
</li>
<li class=""><span>include("include/header.inc"); </span></li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">P</span><span class="tag">></span></span></font></strong><span> </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">FORM</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">ACTION</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">" echo "</font></span><span>$PHP_SELF"; </span><span class="tag"><strong><font color="#006699">?></font></strong></span><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 class="tag-name">INPUT</span></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>$searchstr"; </span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>" </span>
</li>
<li class="alt">
<span></span><span class="attribute"><font color="#ff0000">SIZE</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"20"</font></span><span> </span><span class="attribute"><font color="#ff0000">MAXLENGTH</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"30"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">INPUT</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">TYPE</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"submit"</font></span><span> </span><span class="attribute"><font color="#ff0000">VALUE</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"Search!"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">FORM</span><span class="tag">></span></font></strong><span> </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">P</span><span class="tag">></span></font></strong><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span> </span>
</li>
<li class="">
<span></span><span class="tag-name"><strong><font color="#006699">if</font></strong></span><span> ( ! empty($searchstr) ) </span>
</li>
<li class="alt"><span>{ </span></li>
<li class=""><span>// empty()用来检查查询字串是否为空 </span></li>
<li class="alt"><span>// 如果不为空，调用grep查询 </span></li>
<li class="">
<span>echo "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">HR</span><span class="tag">></span></span></font></strong><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 class="tag-name">OL</span><span class="tag">></span></span></font></strong><span>n"; </span>
</li>
<li class=""><span>while(list($fname,$fline) = each($myresult)) </span></li>
<li class="alt">
<span>echo "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">LI</span><span class="tag">></span></span></font></strong><span> </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">A</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">HREF</font></span><span>="$fname"</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>$fname</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">A</span><span class="tag">></span></font></strong><span> : $fline </span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">LI</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class="alt">
<span>echo "</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">OL</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class=""><span>} </span></li>
<li class="alt"><span>else </span></li>
<li class=""><span>{ </span></li>
<li class="alt"><span>// 如果没有查询结果 </span></li>
<li class="">
<span>echo "Sorry. Search on </span><strong><font color="#006699"><span class="tag"><span class="tag-name">B</span><span class="tag">></span></span></font></strong><span>$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 class="tag-name">BR</span><span class="tag">></span></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>
</li>
<li class="alt">
<span></span><span class="tag-name"><strong><font color="#006699">include</font></strong></span><span>("include/footer.inc"); </span>
</li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
</li>
</ol>
怎么样，通过对上面这段代码的理解，新手们是否已经掌握了PHP实现站内搜索引擎的具体方法呢？
Statement
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
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Assassin's Creed Shadows: Seashell Riddle Solution
4 weeks agoByDDD
What's New in Windows 11 KB5054979 & How to Fix Update Issues
3 weeks agoByDDD
Where to find the Crane Control Keycard in Atomfall
4 weeks agoByDDD
Roblox: Dead Rails - How To Complete Every Challenge
1 months agoByDDD
How to fix KB5055523 fails to install in Windows 11?
2 weeks agoByDDD
Hot Tools
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
Dreamweaver CS6
Visual web development tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
SublimeText3 Chinese version
Chinese version, very easy to use
