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<title>Returns whether the requested index exists</title>
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<h1 class="refname">ArrayObject::offsetExists</h1>
<p class="verinfo">(PHP 5 >= 5.0.0)</p><p class="refpurpose"><span class="refname">ArrayObject::offsetExists</span> — <span class="dc-title">Returns whether the requested index exists</span></p>
</div>
<div class="refsect1 description" id="refsect1-arrayobject.offsetexists-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>ArrayObject::offsetExists</strong></span>
( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$index</code></span>
)</div>
</div>
<div class="refsect1 parameters" id="refsect1-arrayobject.offsetexists-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">index</code></em></span>
<dd>
<p class="para">
The index being checked.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-arrayobject.offsetexists-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
<strong><code>TRUE</code></strong> if the requested index exists, otherwise <strong><code>FALSE</code></strong>
</p>
</div>
<div class="refsect1 examples" id="refsect1-arrayobject.offsetexists-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3989">
<p><strong>Example #1 <span class="methodname"><strong>ArrayObject::offsetExists()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$arrayobj </span><span style="color: #007700">= new </span><span style="color: #0000BB">ArrayObject</span><span style="color: #007700">(array(</span><span style="color: #DD0000">'zero'</span><span style="color: #007700">, </span><span style="color: #DD0000">'one'</span><span style="color: #007700">, </span><span style="color: #DD0000">'example'</span><span style="color: #007700">=></span><span style="color: #DD0000">'e.g.'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$arrayobj</span><span style="color: #007700">-></span><span style="color: #0000BB">offsetExists</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$arrayobj</span><span style="color: #007700">-></span><span style="color: #0000BB">offsetExists</span><span style="color: #007700">(</span><span style="color: #DD0000">'example'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$arrayobj</span><span style="color: #007700">-></span><span style="color: #0000BB">offsetExists</span><span style="color: #007700">(</span><span style="color: #DD0000">'notfound'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
bool(true)
bool(true)
bool(false)
</pre></div>
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