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<?php
function current_filter() {
    global $wp_current_filter;
    return end( $wp_current_filter );
}
?>

• Function Reference/current filter « WordPress Codex
  Description. Retrieve the name of the current filter or action. Usage. <?php current_filter() ?> Parameters. None. Return Values. (string): Hook name of the ...
  codex.wordpress.org
• WordPress › Support » using current_filter
  I have searched the forums and looked at the WordPress code that uses the function current_filter() but when I call it nothing is returned. I need to know which ...
  wordpress.org
• hooks - Is This A Correct Example Usage Of current_filter ...
  Sep 1, 2010 ... Is this a good example of usage of current_filter() ? <?php add_filter("_my_filter"," common_function"); add_filter("_another_filter" ...
  wordpress.stackexchange.com
• current_filter | Pippins Plugins
  Mar 19, 2012 ... After watching a Twitter discussion this morning (shown in the image below), Helen Hou-Sandi, a WordPress developer and core-committer ...
  pippinsplugins.com

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