Starts the list before the elements are added.

• Walker::start_lvl()

$output string Required

Used to append additional content. Passed by reference.

$depth int Optional

Depth of category. Used for tab indentation. Default 0.

$args array Optional

An array of arguments. Will only append content if style argument value is 'list'. See wp_list_categories() .

More Arguments from wp_list_categories( ... $args )

Array or string of arguments. See WP_Term_Query::__construct() for information on accepted arguments.

Default: array()

File: wp-includes/class-walker-category.php. View all references

public function start_lvl( &$output, $depth = 0, $args = array() ) {
	if ( 'list' !== $args['style'] ) {
		return;
	}

	$indent  = str_repeat( "\t", $depth );
	$output .= "$indent<ul class='children'>\n";
}