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<title>获取相关搜索词</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="-">获取相关搜索词</h1>

<p>相关搜索通常是作为当前搜索词的搜索建议出现在搜索结果的下方，引导用户发现其它
更具体、更符合要求的关键词。</p>

<p>相关搜索词使用 <a href="../api/XSSearch.html#getRelatedQuery">XSSearch::getRelatedQuery</a> 方法，返回值是搜索词组成的数组。
接受 2 个可选参数如下：</p>

<ul>
<li><code>$query</code> 搜索语句，返回跟这个搜索语句相关的搜索词，默认为 NULL 使用最近那次 <code>setQuery</code> 的语句</li>
<li><code>$limit</code> 整数值，设置要返回的词数量上限，默认为 6，最大值为 20</li>
</ul>

<div class="hl-code"><div class="php-hl-main"><pre><span class="php-hl-var">$search</span><span class="php-hl-code">-&gt;</span><span class="php-hl-identifier">setQuery</span><span class="php-hl-brackets">(</span><span class="php-hl-quotes">'</span><span class="php-hl-string">西湖</span><span class="php-hl-quotes">'</span><span class="php-hl-brackets">)</span><span class="php-hl-code">;
</span><span class="php-hl-comment">//</span><span class="php-hl-comment"> 获取前 6 个和默认搜索语句 &quot;西湖&quot; 相关搜索词</span>
<span class="php-hl-var">$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">getRelatedQuery</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 10 个和 &quot;杭州&quot; 相关的搜索词</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">getRelatedQuery</span><span class="php-hl-brackets">(</span><span class="php-hl-quotes">'</span><span class="php-hl-string">杭州</span><span class="php-hl-quotes">'</span><span class="php-hl-code">, </span><span class="php-hl-number">10</span><span class="php-hl-brackets">)</span><span class="php-hl-code">;</span></pre></div></div>

<blockquote class="note">
<p><strong>Note:</strong> 获取相关搜索内部会重置 <a href="../api/XSSearch.html#query">XSSearch::query</a> ，建议放在搜索的最后调用。</p>
</blockquote>

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