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?>
<div id="splobjectstorage.attach" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SplObjectStorage::attach</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">SplObjectStorage::attach</span> &mdash; <span class="dc-title">Adds an object in the storage</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-splobjectstorage.attach-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>SplObjectStorage::attach</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.object.php" class="type object">object</a></span> <code class="parameter">$object</code></span>, <span class="methodparam"><span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span> <code class="parameter">$info</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.null">null</a></code></strong></span></span>): <span class="type"><a href="language.types.void.php" class="type void">void</a></span></div>

  <p class="para rdfs-comment">
   Adds an <span class="type"><a href="language.types.object.php" class="type object">object</a></span> inside the storage, and optionally associate it to some data.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-splobjectstorage.attach-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 add.
      </p>
     </dd>
    
    
     <dt><code class="parameter">info</code></dt>
     <dd>
      <p class="para">
       The data to associate with the <span class="type"><a href="language.types.object.php" class="type object">object</a></span>.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-splobjectstorage.attach-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.attach-examples">
  <h3 class="title">示例</h3>
  <p class="para">
   <div class="example" id="example-3856">
    <p><strong>示例 #1 <span class="function"><strong>SplObjectStorage::attach()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$o1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o2 </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">$o1</span><span style="color: #007700">); </span><span style="color: #FF8000">// similar to $s[$o1] = NULL;<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">, </span><span style="color: #DD0000">"hello"</span><span style="color: #007700">); </span><span style="color: #FF8000">// similar to $s[$o2] = "hello";<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">[</span><span style="color: #0000BB">$o1</span><span style="color: #007700">]);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">[</span><span style="color: #0000BB">$o2</span><span style="color: #007700">]);<br /><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">NULL
string(5) &quot;hello&quot;</pre>
</div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-splobjectstorage.attach-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="methodname"><a href="splobjectstorage.detach.php" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::detach()</a> - Removes an object from the storage</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>
   </ul>
  </p>
 </div>


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