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+registerFilter()
+
+dynamically register filters
+
+Description
+===========
+
+void
+
+registerFilter
+
+string
+
+type
+
+mixed
+
+callback
+
+Use this to dynamically register filters to operate on a templates. It
+uses the following parameters:
+
+NOTE.PARAMETER.FUNCTION
+
+A [prefilter](#plugins.prefilters.postfilters) runs through the template
+source before it gets compiled. See [template
+prefilters](#advanced.features.prefilters) for more information on how
+to setup a prefiltering function.
+
+A [postfilter](#plugins.prefilters.postfilters) runs through the
+template code after it was compiled to PHP. See [template
+postfilters](#advanced.features.postfilters) for more information on how
+to setup a postfiltering function.
+
+A [outputfilter](#plugins.outputfilters) operates on a template\'s
+output before it is [displayed](#api.display). See [template output
+filters](#advanced.features.outputfilters) for more information on how
+to set up an output filter function.
+
+See also [`unregisterFilter()`](#api.unregister.filter),
+[`loadFilter()`](#api.load.filter),
+[`$autoload_filters`](#variable.autoload.filters), [template pre
+filters](#advanced.features.prefilters) [template post
+filters](#advanced.features.postfilters) [template output
+filters](#advanced.features.outputfilters) section.