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<div class="refentry" title="register_outputfilter()">
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<h2>Name</h2>
<p>register_outputfilter() — dynamically register outputfilters</p>
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<div class="refsect1" title="Description">
<a name="id3104971"></a><h2>Description</h2>
<code class="methodsynopsis"><span class="type">void </span><span class="methodname">register_outputfilter</span>(<span class="methodparam"><span class="type">mixed </span><span class="parameter">function</span></span>);</code><p>
Use this to dynamically register
<a class="link" href="plugins.outputfilters.html" title="Output Filters">outputfilters</a> to operate on
a template's output before it is
<a class="link" href="api.display.html" title="display()">displayed</a>. See
<a class="link" href="advanced.features.outputfilters.html" title="Output Filters">template output
filters</a>
for more information on how to set up an output filter function.
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The php-function callback <em class="parameter"><code>function</code></em> can be either:
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A string containing the function <em class="parameter"><code>name</code></em>
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<li class="listitem"><p>
An array of the form <code class="literal">array(&$object, $method)</code> with
<code class="literal">&$object</code> being a reference to an
object and <code class="literal">$method</code> being a string
containing the method-name
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<li class="listitem"><p>
An array of the form
<code class="literal">array($class, $method)</code> with
<code class="literal">$class</code> being the class name and
<code class="literal">$method</code> being a method of the class.
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<div class="note" title="Technical Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Technical Note</h3>
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If the chosen <em class="parameter"><code>function</code></em> callback is of the form
<code class="literal">array(&$object, $method)</code>, only one instance of the
same class and with the same <code class="literal">$method</code> can be registered. The
latest registered <em class="parameter"><code>function</code></em> callback will be used in
such a scenario.
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See also
<a class="link" href="api.unregister.outputfilter.html" title="unregister_outputfilter()"><code class="varname">unregister_outputfilter()</code></a>,
<a class="link" href="api.load.filter.html" title="load_filter()"><code class="varname">load_filter()</code></a>,
<a class="link" href="variable.autoload.filters.html" title="$autoload_filters"><em class="parameter"><code>$autoload_filters</code></em></a>
and the
<a class="link" href="advanced.features.outputfilters.html" title="Output Filters">template output filters</a>
section.
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