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filter is not described

comment_feed_groupby filter-hook . WP 2.2.0

Filters the GROUP BY clause of the comments feed query before sending.

Использование

add_filter( 'comment_feed_groupby', 'filter_function_name_4943', 10, 2 );
function filter_function_name_4943( $cgroupby, $this ){
	// filter...

	return $cgroupby;
}
$cgroupby(string)
The GROUP BY clause of the query.
$this(WP_Query)
The WP_Query instance (passed by reference).

Changelog

Since 2.2.0 Introduced.

Where the hook is called

WP_Query::get_posts()
comment_feed_groupby
wp-includes/class-wp-query.php 2634
$cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) );
wp-includes/class-wp-query.php 3056
$cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) );

Where in WP core the hook is used WordPress

Usage not found.