.. _faddfilter:

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add_filter
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:doc:`Plugin-related functions </Reference/packages/Function/Plugin/index>`

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Summary
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.. include:: /Reference/libraries/globals/summary/add_filter.rst

.. php:function:: add_filter(string|array $name, callback $callback, integer $priority = 10)

    Declare a filter implementation.
    
    :param string|array $name: The filter name.
    :param callback $callback: The function to call.
    :param integer $priority: Defaults to 10.

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Usage
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.. include:: /Reference/libraries/globals/usage/add_filter.rst

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Examples
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.. include:: /Reference/libraries/globals/examples/add_filter.rst

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See Also
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.. include:: /Reference/libraries/globals/see_also/add_filter.rst