# SeekableIterator # [SeekableIterator interface](https://www.php.net/manual/zh/class.seekableiterator.php) > 可读的迭代器 ## 接口摘要 ``` <pre class="calibre17">``` SeekableIterator extends <span class="token4">Iterator</span> <span class="token3">{</span> <span class="token">/* 方法 */</span> abstract public seek <span class="token3">(</span> int $position <span class="token3">)</span> <span class="token3">:</span> void <span class="token">/* 继承的方法 */</span> abstract public Iterator<span class="token3">:</span><span class="token3">:</span>current <span class="token3">(</span> void <span class="token3">)</span> <span class="token3">:</span> mixed abstract public Iterator<span class="token3">:</span><span class="token3">:</span>key <span class="token3">(</span> void <span class="token3">)</span> <span class="token3">:</span> scalar abstract public Iterator<span class="token3">:</span><span class="token3">:</span>next <span class="token3">(</span> void <span class="token3">)</span> <span class="token3">:</span> void abstract public Iterator<span class="token3">:</span><span class="token3">:</span>rewind <span class="token3">(</span> void <span class="token3">)</span> <span class="token3">:</span> void abstract public Iterator<span class="token3">:</span><span class="token3">:</span>valid <span class="token3">(</span> void <span class="token3">)</span> <span class="token3">:</span> bool <span class="token3">}</span> ``` ```