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<title>Create a RecursiveCallbackFilterIterator from a RecursiveIterator</title>
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<h1 class="refname">RecursiveCallbackFilterIterator::__construct</h1>
<p class="verinfo">(PHP 5 >= 5.4.0)</p><p class="refpurpose"><span class="refname">RecursiveCallbackFilterIterator::__construct</span> — <span class="dc-title">Create a RecursiveCallbackFilterIterator from a RecursiveIterator</span></p>
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<div class="refsect1 description" id="refsect1-recursivecallbackfilteriterator.construct-description">
<h3 class="title">Description</h3>
<div class="constructorsynopsis dc-description">
<span class="modifier">public</span>
<span class="methodname"><strong>RecursiveCallbackFilterIterator::__construct()</strong></span>
( <span class="methodparam"><span class="type"><a href="class.recursiveiterator.html" class="type RecursiveIterator">RecursiveIterator</a></span> <code class="parameter">$iterator</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$callback</code></span>
)</div>
<p class="para rdfs-comment">
Creates a filtered iterator from a <span class="interfacename"><a href="class.recursiveiterator.html" class="interfacename">RecursiveIterator</a></span>
using the <em><code class="parameter">callback</code></em> to determine which
items are accepted or rejected.
</p>
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<div class="refsect1 parameters" id="refsect1-recursivecallbackfilteriterator.construct-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<span class="term"><em><code class="parameter">iterator</code></em></span>
<dd>
<p class="para">
The recursive iterator to be filtered.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">callback</code></em></span>
<dd>
<p class="para">
The callback, which should return <strong><code>TRUE</code></strong> to accept the current item
or <strong><code>FALSE</code></strong> otherwise.
See <a href="class.recursivecallbackfilteriterator.html#recursivecallbackfilteriterator.examples" class="link">Examples</a>.
</p>
<p class="para">
May be any valid <span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> value.
</p>
</dd>
</dt>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-recursivecallbackfilteriterator.construct-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-recursivecallbackfilteriterator.construct-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><a href="class.recursivecallbackfilteriterator.html#recursivecallbackfilteriterator.examples" class="link">RecursiveCallbackFilterIterator Examples</a></li>
<li class="member"> <span class="methodname"><a href="recursivecallbackfilteriterator.getchildren.html" class="methodname" rel="rdfs-seeAlso">RecursiveCallbackFilterIterator::getChildren()</a> - Return the inner iterator's children contained in a RecursiveCallbackFilterIterator</span></li>
<li class="member"> <span class="methodname"><a href="recursivecallbackfilteriterator.haschildren.html" class="methodname" rel="rdfs-seeAlso">RecursiveCallbackFilteriterator::hasChildren()</a> - Check whether the inner iterator's current element has children</span></li>
</ul>
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