S.H.I.E.L.D.
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<a href="http://www.xunsearch.com" target="_blank">Xunsearch PHP-SDK</a> v1.3.2 API 参考文档
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<div id="content" class="api-index">
<h1>XSJsonDataSource</h1>
<div id="nav">
<a href="index.html">All Packages</a>
| <a href="#properties">属性</a>
| <a href="#methods">方法(函数)</a>
</div>

<table class="summaryTable docClass">
<colgroup>
	<col class="col-name" />
	<col class="col-value" />
</colgroup>
<tr>
  <th>包</th>
  <td><a href="index.html#XS.util">XS.util</a></td>
</tr>
<tr>
  <th>继承关系</th>
  <td>class XSJsonDataSource &raquo;
<a href="XSDataSource.html">XSDataSource</a></td>
</tr>
<tr>
  <th>版本</th>
  <td>1.0.0</td>
</tr>
<tr>
  <th>源代码</th>
  <td><a class="sourceLink" href="https://github.com/hightman/xunsearch/blob/master/sdk/php/util/XSDataSource.class.php">sdk/php/util/XSDataSource.class.php</a></td>
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JSON 数据源
要求以 \n (换行符) 分割, 每行为一条完整的 json 数据</div>

<a name="properties"></a>

<div class="summary docProperty">
<h2>Protected 属性</h2>

<p><a href="#" class="toggle">隐去继承来的属性</a></p>

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<colgroup>
	<col class="col-property" />
	<col class="col-type" />
	<col class="col-description" />
	<col class="col-defined" />
</colgroup>
<tr>
  <th>名称</th><th>类型</th><th>描述</th><th>定义于</th>
</tr>
<tr class="inherited" id="arg">
  <td><a href="XSDataSource.html#arg-detail">arg</a></td>
  <td></td>
  <td></td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
</tr>
<tr class="inherited" id="type">
  <td><a href="XSDataSource.html#type-detail">type</a></td>
  <td></td>
  <td></td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
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<h2>Public 方法</h2>

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	<col class="col-description" />
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  <th>名称</th><th>描述</th><th>定义于</th>
</tr>
<tr class="inherited" id="__construct">
  <td><a href="XSDataSource.html#__construct-detail">__construct()</a></td>
  <td>构造函数</td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
</tr>
<tr class="inherited" id="getCharset">
  <td><a href="XSDataSource.html#getCharset-detail">getCharset()</a></td>
  <td>取得数据源的准确字符集</td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
</tr>
<tr class="inherited" id="getData">
  <td><a href="XSDataSource.html#getData-detail">getData()</a></td>
  <td>从数据源中提取一条数据</td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
</tr>
<tr class="inherited" id="instance">
  <td><a href="XSDataSource.html#instance-detail">instance()</a></td>
  <td>取得数据源对象实例</td>
  <td><a href="XSDataSource.html">XSDataSource</a></td>
</tr>
</table>
</div>

<div class="summary docMethod">
<h2>Protected 方法</h2>

<p><a href="#" class="toggle">隐去继承来的方法</a></p>

<table class="summaryTable">
<colgroup>
	<col class="col-method" />
	<col class="col-description" />
	<col class="col-defined" />
</colgroup>
<tr>
  <th>名称</th><th>描述</th><th>定义于</th>
</tr>
<tr id="deinit">
  <td><a href="XSJsonDataSource.html#deinit-detail">deinit()</a></td>
  <td></td>
  <td>XSJsonDataSource</td>
</tr>
<tr id="getDataList">
  <td><a href="XSJsonDataSource.html#getDataList-detail">getDataList()</a></td>
  <td></td>
  <td>XSJsonDataSource</td>
</tr>
<tr id="init">
  <td><a href="XSJsonDataSource.html#init-detail">init()</a></td>
  <td></td>
  <td>XSJsonDataSource</td>
</tr>
</table>
</div>

<a name="events"></a>

<h2>方法明细</h2>

<div class="detailHeader" id="deinit-detail">
deinit()
<span class="detailHeaderTag">
方法
</span>
</div>

<table class="summaryTable">
<tr><td colspan="3">
<div class="signature2">
protected void <b>deinit</b>()</div>
</td></tr>
</table>

<div class="sourceCode">
<b>源码:</b> <a class="sourceLink" href="https://github.com/hightman/xunsearch/blob/master/sdk/php/util/XSDataSource.class.php#L290">sdk/php/util/XSDataSource.class.php#L290</a> (<b><a href="#" class="show">显示</a></b>)
<div class="code"><code><span style="color: #000000">
<span style="color: #0000BB"></span><span style="color: #007700">protected&nbsp;function&nbsp;</span><span style="color: #0000BB">deinit</span><span style="color: #007700">()<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fd</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fd</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">null</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}</span>
</span>
</code></div>
</div>

<p></p>


<div class="detailHeader" id="getDataList-detail">
getDataList()
<span class="detailHeaderTag">
方法
</span>
</div>

<table class="summaryTable">
<tr><td colspan="3">
<div class="signature2">
protected void <b>getDataList</b>()</div>
</td></tr>
</table>

<div class="sourceCode">
<b>源码:</b> <a class="sourceLink" href="https://github.com/hightman/xunsearch/blob/master/sdk/php/util/XSDataSource.class.php#L299">sdk/php/util/XSDataSource.class.php#L299</a> (<b><a href="#" class="show">显示</a></b>)
<div class="code"><code><span style="color: #000000">
<span style="color: #0000BB"></span><span style="color: #007700">protected&nbsp;function&nbsp;</span><span style="color: #0000BB">getDataList</span><span style="color: #007700">()<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;read&nbsp;line&nbsp;(check&nbsp;to&nbsp;timeout?)<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$line&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">''</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;(</span><span style="color: #0000BB">true</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$buf&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fgets</span><span style="color: #007700">(</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">8192</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(</span><span style="color: #0000BB">$buf&nbsp;</span><span style="color: #007700">===&nbsp;</span><span style="color: #0000BB">false&nbsp;</span><span style="color: #007700">||&nbsp;</span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$buf</span><span style="color: #007700">)&nbsp;===&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$line&nbsp;</span><span style="color: #007700">.=&nbsp;</span><span style="color: #0000BB">$buf</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(</span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$buf</span><span style="color: #007700">)&nbsp;&lt;&nbsp;</span><span style="color: #0000BB">8191&nbsp;</span><span style="color: #007700">||&nbsp;</span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">$buf</span><span style="color: #007700">,&nbsp;-&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">)&nbsp;===&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;empty&nbsp;line&nbsp;(end&nbsp;of&nbsp;file)<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">if&nbsp;(empty(</span><span style="color: #0000BB">$line</span><span style="color: #007700">))<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"INFO:&nbsp;reach&nbsp;end&nbsp;of&nbsp;the&nbsp;file,&nbsp;total&nbsp;lines:&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">line&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">false</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;try&nbsp;to&nbsp;decode&nbsp;the&nbsp;line<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">line</span><span style="color: #007700">++;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$line&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">rtrim</span><span style="color: #007700">(</span><span style="color: #0000BB">$line</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"\r\n"</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(</span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$line</span><span style="color: #007700">)&nbsp;===&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"WARNING:&nbsp;empty&nbsp;line&nbsp;#"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">line&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getDataList</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$item&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">json_decode</span><span style="color: #007700">(</span><span style="color: #0000BB">$line</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(!</span><span style="color: #0000BB">is_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$item</span><span style="color: #007700">)&nbsp;||&nbsp;</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$item</span><span style="color: #007700">)&nbsp;===&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;switch&nbsp;(</span><span style="color: #0000BB">json_last_error</span><span style="color: #007700">())<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #0000BB">JSON_ERROR_DEPTH</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$error&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'&nbsp;-&nbsp;Maximum&nbsp;stack&nbsp;depth&nbsp;exceeded'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #0000BB">JSON_ERROR_CTRL_CHAR</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$error&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'&nbsp;-&nbsp;Unexpected&nbsp;control&nbsp;character&nbsp;found'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #0000BB">JSON_ERROR_SYNTAX</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$error&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'&nbsp;-&nbsp;Syntax&nbsp;error,&nbsp;malformed&nbsp;JSON'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;default&nbsp;:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$error&nbsp;</span><span style="color: #007700">=&nbsp;(</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$item</span><span style="color: #007700">)&nbsp;===&nbsp;</span><span style="color: #0000BB">0&nbsp;</span><span style="color: #007700">?&nbsp;</span><span style="color: #DD0000">'&nbsp;-&nbsp;Empty&nbsp;array'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">''</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"WARNING:&nbsp;invalid&nbsp;line&nbsp;#"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">line&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$error&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getDataList</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;array(</span><span style="color: #0000BB">$item</span><span style="color: #007700">);<br />}</span>
</span>
</code></div>
</div>

<p></p>


<div class="detailHeader" id="init-detail">
init()
<span class="detailHeaderTag">
方法
</span>
</div>

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<div class="signature2">
protected void <b>init</b>()</div>
</td></tr>
</table>

<div class="sourceCode">
<b>源码:</b> <a class="sourceLink" href="https://github.com/hightman/xunsearch/blob/master/sdk/php/util/XSDataSource.class.php#L277">sdk/php/util/XSDataSource.class.php#L277</a> (<b><a href="#" class="show">显示</a></b>)
<div class="code"><code><span style="color: #000000">
<span style="color: #0000BB"></span><span style="color: #007700">protected&nbsp;function&nbsp;</span><span style="color: #0000BB">init</span><span style="color: #007700">()<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$file&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">arg</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(empty(</span><span style="color: #0000BB">$file</span><span style="color: #007700">))<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"WARNING:&nbsp;input&nbsp;file&nbsp;not&nbsp;specified,&nbsp;read&nbsp;data&nbsp;from&nbsp;&lt;STDIN&gt;\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$file&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'php://stdin'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(!(</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'r'</span><span style="color: #007700">)))<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;</span><span style="color: #0000BB">XSException</span><span style="color: #007700">(</span><span style="color: #DD0000">"Can&nbsp;not&nbsp;open&nbsp;input&nbsp;file:&nbsp;'</span><span style="color: #0000BB">$file</span><span style="color: #DD0000">'"</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">line&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">;<br />}</span>
</span>
</code></div>
</div>

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