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?>
<div id="yaf-session.isset" class="refentry">
 <div class="refnamediv">
<h1 class="refname">Yaf_Session::__isset</h1>
<p class="verinfo">(Yaf &gt;=1.0.0)</p><p class="refpurpose"><span class="refname">Yaf_Session::__isset</span> &mdash; <span class="dc-title">Check if a session key exists</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-yaf-session.isset-description">
  <h3 class="title">Опис</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="modifier">function</span> <span class="methodname"><strong>Yaf_Session::__isset</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$name</code></span>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="simpara">Checks whether a session key exists. This method is an alias of <span class="methodname"><a href="yaf-session.has.php" class="methodname">Yaf_Session::has()</a></span> and is called when <code class="literal">isset()</code> is used on a session object.</p>
 </div>


 <div class="refsect1 parameters" id="refsect1-yaf-session.isset-parameters">
  <h3 class="title">Параметри</h3>
  <dl>
   
    <dt><code class="parameter">name</code></dt>
    <dd>
<p class="simpara">The session key to check.</p>
    </dd>
   
  </dl>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-yaf-session.isset-returnvalues">
  <h3 class="title">Значення, що повертаються</h3>
<p class="simpara">Returns <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> if the key exists, <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> otherwise.</p>
 </div>


 <div class="refsect1 examples" id="refsect1-yaf-session.isset-examples">
  <h3 class="title">Приклади</h3>
  <div class="example" id="example-1">
   <p><strong>Приклад #1 <span class="methodname"><strong>Yaf_Session::__isset()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><pre><code style="color: #000000"><span style="color: #0000BB">&lt;?php
$session </span><span style="color: #007700">= </span><span style="color: #0000BB">Yaf_Session</span><span style="color: #007700">::</span><span style="color: #0000BB">getInstance</span><span style="color: #007700">();
</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">start</span><span style="color: #007700">();

</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">user_id </span><span style="color: #007700">= </span><span style="color: #0000BB">42</span><span style="color: #007700">;

</span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(isset(</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">user_id</span><span style="color: #007700">));
</span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(isset(</span><span style="color: #0000BB">$session</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">user_name</span><span style="color: #007700">));
</span><span style="color: #0000BB">?&gt;</span></code></pre></div>
   </div>

   <div class="example-contents"><p>Поданий вище приклад виведе щось
схоже на:</p></div>
   <div class="example-contents screen">
<div class="examplescode"><pre class="examplescode">bool(true)
bool(false)</pre>
</div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-yaf-session.isset-seealso">
  <h3 class="title">Прогляньте також</h3>
  <ul class="simplelist">
   <li><span class="methodname"><a href="yaf-session.has.php" class="methodname" rel="rdfs-seeAlso">Yaf_Session::has()</a> - Check if a session key exists</span></li>
   <li><span class="methodname"><a href="yaf-session.get.php" class="methodname" rel="rdfs-seeAlso">Yaf_Session::get()</a> - Get a session value</span></li>
  </ul>
 </div>

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