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Walker_Category::start_lvl( string $output, int $depth, array $args = array() )

Starts the list before the elements are added.

Description

See also

Parameters

$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().

Default value: array()

Source

File: wp-includes/class-walker-category.php 

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";
	}

Changelog

Version Description
2.1.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/walker_category/start_lvl