I see intermittent use of filter="safehtml" and filter="string" throught Joomla forms. Is there a complete list, and can custom filters be created?

  • FYI: The JForm filters are now in /libraries/src/Form/Form.php method filterField
    – bertmert
    Commented Jul 1, 2018 at 16:16

1 Answer 1


The possible filters are:

  • rules (Access Control Rules)
  • unset (Do nothing, thus leaving the return value as null)
  • raw (No filter)
  • int_array (Filter the input as an array of integers)
  • safehtml (Filter safe HTML)
  • server_utc (Convert a date to UTC based on the server timezone offset)
  • user_utc (Convert a date to UTC based on the user timezone offset)
  • url (URL filter which also ensure the protocol is present)
  • tel (Filter for phone number. It will try and match against specific patterns, else return a string of numbers)

For a full list of jInput filters and how to use them, see Retrieving request data using JInput.

Hope this helps

  • Where did you get/find this? Am looking at joomla\libraries\filter\input.php, and see some from your list and others that you haven't included.
    – GDP
    Commented Dec 22, 2014 at 20:57
  • 1
    Have a look here: github.com/joomla/joomla-cms/blob/master/libraries/joomla/form/…
    – Lodder
    Commented Dec 22, 2014 at 20:58
  • @GDP - The filters in the file you mentioned are for JInput as show here
    – Lodder
    Commented Dec 22, 2014 at 21:01
  • 1
    No worries. As for the custom filters, you can most likely create your own by extending the class, but have never tried this.
    – Lodder
    Commented Dec 22, 2014 at 21:05
  • 1
    In joomla 3.9.24 unit tests suite on the official joomla-cms repo you can find some more filter type such as php custom function, php custom method, word, and int here is the link github.com/joomla/joomla-cms/blob/3.9.24/tests/unit/suites/… Commented Apr 2, 2021 at 23:16

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