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<h1 class="refname">MongoCursor::doQuery</h1>
<p class="verinfo">(No version information available, might only be in SVN)</p><p class="refpurpose"><span class="refname">MongoCursor::doQuery</span> — <span class="dc-title">Execute the query.</span></p>
</div>
<div class="refsect1 description" id="refsect1-mongocursor.doquery-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">protected</span> <span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>MongoCursor::doQuery</strong></span>
( <span class="methodparam">void</span>
)</div>
<div class="warning"><strong class="warning">Warning</strong>
<p class="para">
Please do not use me.
</p>
</div>
<p class="para">
This function actually queries the database. All queries and commands go
through this function. Thus, this function can be overridden to provide
custom query handling.
</p>
<p class="para">
This handles serializing your query, sending it to the database, receiving a
response, and deserializing it. Thus, if you are planning to override this,
your code should probably call out to the original to use the existing
functionality (see the example below).
</p>
</div>
<div class="refsect1 parameters" id="refsect1-mongocursor.doquery-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-mongocursor.doquery-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
<strong><code>NULL</code></strong>.
</p>
</div>
<div class="refsect1 errors" id="refsect1-mongocursor.doquery-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Throws <a href="class.mongoconnectionexception.html" class="classname">MongoConnectionException</a> if it cannot reach the
database.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-mongocursor.doquery-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>1.2.11</td>
<td>Emits <strong><code>E_DEPRECATED</code></strong> when used.</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-mongocursor.doquery-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="mongocursor.doquery.example.basic">
<p><strong>Example #1 <span class="function"><strong>MongoCursor::doQuery()</strong></span> example</strong></p>
<div class="example-contents"><p>
You could override this function to attempt a query on a secondary and, if
that fails, try it again on the primary.
</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyCursor </span><span style="color: #007700">extends </span><span style="color: #0000BB">MongoCursor </span><span style="color: #007700">{<br /><br /> protected function </span><span style="color: #0000BB">doQuery</span><span style="color: #007700">() {<br /><br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">slaveOkay</span><span style="color: #007700">();<br /><br /> try {<br /> </span><span style="color: #0000BB">MongoCursor</span><span style="color: #007700">::</span><span style="color: #0000BB">doQuery</span><span style="color: #007700">();<br /> }<br /> catch(</span><span style="color: #0000BB">MongoCursorException $e</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">slaveOkay</span><span style="color: #007700">(</span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">MongoCursor</span><span style="color: #007700">::</span><span style="color: #0000BB">doQuery</span><span style="color: #007700">();<br /> }<br /> }<br />}<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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