screen_layout_columns filter-hook . WP 2.8.0

Filters the array of screen layout columns.

This hook provides back-compat for plugins using the back-compat Filters instead of add_screen_option().

Usage

add_filter( 'screen_layout_columns', 'filter_function_name_423', 10, 3 );
function filter_function_name_423( $empty_columns, $screen_id, $this ){
	// filter...

	return $empty_columns;
}

$empty_columns(array)

Empty array.

$screen_id(string)

Screen ID.

$this(WP_Screen)

Current WP_Screen instance.

Where the hook is called

$columns = apply_filters( 'screen_layout_columns', array(), $this->id, $this );

Where the hook is used (in WP core)