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<title>The MongoDuplicateKeyException class</title>
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<h1 class="title">The MongoDuplicateKeyException class</h1>
<div class="partintro"><p class="verinfo">(PECL mongo >= 1.5.0)</p>
<div class="section" id="mongoduplicatekeyexception.intro">
<h2 class="title">Introduction</h2>
<p class="para">
Thrown when attempting to insert a document into a collection which already contains the same values for the <a href="mongocollection.ensureindex.html" class="link">unique keys</a>.
</p>
</div>
<div class="section" id="mongoduplicatekeyexception.synopsis">
<h2 class="title">Class synopsis</h2>
<div class="classsynopsis">
<div class="ooclass"></div>
<div class="classsynopsisinfo">
<span class="ooclass">
<strong class="classname">MongoDuplicateKeyException</strong>
</span>
<span class="ooclass">
<span class="modifier">extends</span>
<a href="class.mongowriteconcernexception.html" class="classname">MongoWriteConcernException</a>
</span>
{</div>
<div class="classsynopsisinfo classsynopsisinfo_comment">/* Inherited properties */</div>
<div class="fieldsynopsis">
<span class="modifier">protected</span>
<span class="type">string</span>
<var class="varname"><a href="class.exception.html#exception.props.message">$<var class="varname">message</var></a></var>
;</div>
<div class="fieldsynopsis">
<span class="modifier">protected</span>
<span class="type">int</span>
<var class="varname"><a href="class.exception.html#exception.props.code">$<var class="varname">code</var></a></var>
;</div>
<div class="fieldsynopsis">
<span class="modifier">protected</span>
<span class="type">string</span>
<var class="varname"><a href="class.exception.html#exception.props.file">$<var class="varname">file</var></a></var>
;</div>
<div class="fieldsynopsis">
<span class="modifier">protected</span>
<span class="type">int</span>
<var class="varname"><a href="class.exception.html#exception.props.line">$<var class="varname">line</var></a></var>
;</div>
<div class="classsynopsisinfo classsynopsisinfo_comment">/* Inherited methods */</div>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">array</span> <span class="methodname"><a href="mongowriteconcernexception.getdocument.html" class="methodname">MongoWriteConcernException::getDocument</a></span>
( <span class="methodparam">void</span>
)</div>
}</div>
</div>
<div class="section" id="mongoduplicatekeyexception.examples">
<h2 class="title">Examples</h2>
<div class="example" id="example-1678">
<p><strong>Example #1 Catching MongoDuplicateKeyException</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$mc </span><span style="color: #007700">= new </span><span style="color: #0000BB">MongoClient</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$c </span><span style="color: #007700">= </span><span style="color: #0000BB">$mc</span><span style="color: #007700">-></span><span style="color: #0000BB">selectCollection</span><span style="color: #007700">(</span><span style="color: #DD0000">"test"</span><span style="color: #007700">, </span><span style="color: #DD0000">"test"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$c</span><span style="color: #007700">-></span><span style="color: #0000BB">insert</span><span style="color: #007700">(array(</span><span style="color: #DD0000">'_id' </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">));<br />try {<br /> </span><span style="color: #0000BB">$c</span><span style="color: #007700">-></span><span style="color: #0000BB">insert</span><span style="color: #007700">(array(</span><span style="color: #DD0000">'_id' </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">));<br />} catch (</span><span style="color: #0000BB">MongoWriteConcernException $e</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getMessage</span><span style="color: #007700">(), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above examples will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
localhost:27017: insertDocument :: caused by :: 11000 E11000 duplicate key error index: test.test.$_id_ dup key: { : 1 }
</pre></div>
</div>
</div>
</div>
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