S.H.I.E.L.D.
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<title>获取热门搜索词</title>
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<a href="http://www.xunsearch.com" target="_blank">Xunsearch PHP-SDK</a> v1.3.2 权威指南
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	<h1 id="-">获取热门搜索词</h1>

<p>在您的搜索功能进行一段时间后，系统会记录并分析所有的搜索词汇，
提供热门搜索词列表以辅助网站运营、引导用户搜索。</p>

<p>热门搜索词使用 <a href="../api/XSSearch.html#getHotQuery">XSSearch::getHotQuery</a> 方法，返回值是以搜索词为键、
搜索指数为值的关联数组。接受 2 个可选参数如下：</p>

<ul>
<li><code>$limit</code> 整数值，设置要返回的词数量上限，默认为 6，最大值为 50</li>
<li><code>$type</code> 指定排序类型，默认为 <code>total</code>(总量)，可选值还有：<code>lastnum</code>(上周) 和 <code>currnum</code>(本周)</li>
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<div class="hl-code"><div class="php-hl-main"><pre><span class="php-hl-var">$words</span><span class="php-hl-code"> = </span><span class="php-hl-var">$search</span><span class="php-hl-code">-&gt;</span><span class="php-hl-identifier">getHotQuery</span><span class="php-hl-brackets">(</span><span class="php-hl-brackets">)</span><span class="php-hl-code">; </span><span class="php-hl-comment">//</span><span class="php-hl-comment"> 获取前 6 个总热门搜索词</span>
<span class="php-hl-var">$words</span><span class="php-hl-code"> = </span><span class="php-hl-var">$search</span><span class="php-hl-code">-&gt;</span><span class="php-hl-identifier">getHotQuery</span><span class="php-hl-brackets">(</span><span class="php-hl-number">10</span><span class="php-hl-code">, </span><span class="php-hl-quotes">'</span><span class="php-hl-string">lastnum</span><span class="php-hl-quotes">'</span><span class="php-hl-brackets">)</span><span class="php-hl-code">; </span><span class="php-hl-comment">//</span><span class="php-hl-comment"> 获取前 10 个上周热门词</span></pre></div></div>

<h2 id="-">有关热门搜索的深度挖掘</h2>

<p>搜索日志也是一个完整的索引库，可以进行更深入的分析。由于涉及的知识和基础较为复杂，
这块内容这儿暂时略过。</p>

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		<div class="prev"><a href="search.count.html">&laquo; 获取搜索匹配数量</a></div>
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