PHP_PHP チュートリアルでオンサイト検索エンジンを実装する具体的な方法について説明します。

実際のコーディングでは、次のコードを使用できます。以下は、PHP でオンサイト検索エンジンを実装するための具体的なコードです。

上記のことを理解して、

<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>

はどうでしょうか？コード 、初心者は PHP でオンサイト検索エンジンを実装する具体的な方法をマスターしましたか?

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tru​​e

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技術記事

実際のコーディングでは、次の特定のコードを使用して、PHP でオンサイト検索エンジンを実装できます。 .