Walker_PageDropdown::start_el( string $output, WP_Post $data_object, int $depth, array $args = array(), int $current_object_id )

Starts the element output.

Description

See also

Parameters

$output

(Required) Used to append additional content. Passed by reference.

$data_object

(Required) Page data object.

$depth

(Optional) Depth of page in reference to parent pages.<br> Used for padding. Default 0.

$args

(Optional) Uses 'selected' argument for selected page to set selected HTML attribute for option element. Uses 'value_field' argument to fill "value" attribute.<br> See wp_dropdown_pages().

Default value: array()

$current_object_id

(Optional) ID of the current page. Default 0.

Source

File: wp-includes/class-walker-page-dropdown.php 

	public function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) {
		$pad = str_repeat('&nbsp;', $depth * 3);

		if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) {
			$args['value_field'] = 'ID';
		}

		$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . "\"";
		if ( $page->ID == $args['selected'] )
			$output .= ' selected="selected"';
		$output .= '>';

		$title = $page->post_title;
		if ( '' === $title ) {
			/* translators: %d: ID of a post */
			$title = sprintf( __( '#%d (no title)' ), $page->ID );
		}

		/**
		 * Filters the page title when creating an HTML drop-down list of pages.
		 *
		 * @since WP-3.1.0
		 *
		 * @param string $title Page title.
		 * @param object $page  Page data object.
		 */
		$title = apply_filters( 'list_pages', $title, $page );

		$output .= $pad . esc_html( $title );
		$output .= "</option>\n";
	}

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Changelog

Changelog
Version Description
5.9.0 Renamed $page to $data_object and $id to $current_object_id to match parent class for PHP 8 named parameter support.
2.1.0 Introduced.