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    1 => 'MongoDB\\BSON\\Document::offsetGet',
    2 => 'Returns the value of a key in the document',
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?>
<div id="mongodb-bson-document.offsetget" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">MongoDB\BSON\Document::offsetGet</h1>
  <p class="verinfo">(mongodb &gt;=1.17.0)</p><p class="refpurpose"><span class="refname">MongoDB\BSON\Document::offsetGet</span> &mdash; <span class="dc-title">Returns the value of a key in the document</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-mongodb-bson-document.offsetget-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">final</span> <span class="modifier">public</span> <span class="methodname"><strong>MongoDB\BSON\Document::offsetGet</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span> <code class="parameter">$key</code></span>): <span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span></div>

 </div>


 <div class="refsect1 parameters" id="refsect1-mongodb-bson-document.offsetget-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">key</code></dt>
     <dd>
      <p class="para">
       The key to retrieve from the document.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mongodb-bson-document.offsetget-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the value associated with the given key. If the key is not present in
   the document, an exception is thrown.
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <span class="simpara">
    When encountering a value encoded as 64-bit integer in the BSON document,
    the return value of this method will be a
    <span class="classname"><a href="class.mongodb-bson-int64.php" class="classname">MongoDB\BSON\Int64</a></span> instance.
   </span>
  </p></blockquote>
 </div>


 <div class="refsect1 errors" id="refsect1-mongodb-bson-document.offsetget-errors">
  <h3 class="title">错误／异常</h3>
  <ul class="simplelist">
   <li>Throws <span class="classname"><a href="class.mongodb-driver-exception-invalidargumentexception.php" class="classname">MongoDB\Driver\Exception\InvalidArgumentException</a></span> on argument parsing errors.</li>
   <li>Throws <span class="classname"><a href="class.mongodb-driver-exception-runtimeexception.php" class="classname">MongoDB\Driver\Exception\RuntimeException</a></span> if the key is not present in the document.</li>
  </ul>
 </div>


 <div class="refsect1 seealso" id="refsect1-mongodb-bson-document.offsetget-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="methodname"><a href="arrayaccess.offsetget.php" class="methodname" rel="rdfs-seeAlso">ArrayAccess::offsetGet()</a> - 获取一个偏移位置的值</span></li>
    <li><span class="methodname"><a href="mongodb-bson-document.get.php" class="methodname" rel="rdfs-seeAlso">MongoDB\BSON\Document::get()</a> - Returns the value of a key in the document</span></li>
   </ul>
  </p>
 </div>


</div><?php manual_footer($setup); ?>