n><span style="color: #0000BB">key</span><span style="color: #007700">()<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">_key</span><span style="color: #007700">;<br />}</span>
</span>
</code></div>
</div>
<p>Returns the key of the current array element.
This method is required by the interface Iterator.</p>


<div class="detailHeader" id="next-detail">
next()
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