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?>
<div id="splobjectstorage.offsetunset" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SplObjectStorage::offsetUnset</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">SplObjectStorage::offsetUnset</span> &mdash; <span class="dc-title">Removes an object from the storage</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-splobjectstorage.offsetunset-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>SplObjectStorage::offsetUnset</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.object.php" class="type object">object</a></span> <code class="parameter">$object</code></span>): <span class="type"><a href="language.types.void.php" class="type void">void</a></span></div>

  <p class="para rdfs-comment">
   Removes an <span class="type"><a href="language.types.object.php" class="type object">object</a></span> from the storage.
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    <span class="methodname"><strong>SplObjectStorage::offsetUnset()</strong></span> is an alias of <span class="methodname"><a href="splobjectstorage.detach.php" class="methodname">SplObjectStorage::detach()</a></span>.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-splobjectstorage.offsetunset-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">object</code></dt>
     <dd>
      <p class="para">
       The <span class="type"><a href="language.types.object.php" class="type object">object</a></span> to remove.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-splobjectstorage.offsetunset-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-splobjectstorage.offsetunset-examples">
  <h3 class="title">示例</h3>
  <p class="para">
   <div class="example" id="example-3868">
    <p><strong>示例 #1 <span class="function"><strong>SplObjectStorage::offsetUnset()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$o </span><span style="color: #007700">= new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$s </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplObjectStorage</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">offsetUnset</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">); </span><span style="color: #FF8000">// Similar to unset($s[$o])<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

    <div class="example-contents"><p>以上示例的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="examplescode"><pre class="examplescode">int(1)
int(0)</pre>
</div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-splobjectstorage.offsetunset-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="methodname"><a href="splobjectstorage.offsetget.php" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetGet()</a> - Returns the data associated with an object</span></li>
    <li><span class="methodname"><a href="splobjectstorage.offsetset.php" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetSet()</a> - Associates data to an object in the storage</span></li>
    <li><span class="methodname"><a href="splobjectstorage.offsetexists.php" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetExists()</a> - Checks whether an object exists in the storage</span></li>
   </ul>
  </p>
 </div>


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