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функция не описана

Walker_Page::start_el() WP 2.1.0

Outputs the beginning of the current element in the tree.

Это метод класса: Walker_Page

Возвращает

Null. Ничего.

Использование

$Walker_Page = new Walker_Page();
$var = $Walker_Page->start_el( $output, $page, $depth, $args, $current_page );
$output(строка) (обязательный) (передается по ссылке — &)
Used to append additional content. Passed by reference.
$page(WP_Post) (обязательный)
Page data object.
$depth(число)
Depth of page. Used for padding.
По умолчанию: 0
$args(массив)
Array of arguments.
По умолчанию: empty array
$current_page(число)
Page ID.
По умолчанию: 0

Заметки

  • Смотрите: Walker::start_el()

Список изменений

С версии 2.1.0 Введена.

Код Walker Page::start el: wp-includes/class-walker-page.php WP 5.2.3

<?php
public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
	if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
		$t = "\t";
		$n = "\n";
	} else {
		$t = '';
		$n = '';
	}
	if ( $depth ) {
		$indent = str_repeat( $t, $depth );
	} else {
		$indent = '';
	}

	$css_class = array( 'page_item', 'page-item-' . $page->ID );

	if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
		$css_class[] = 'page_item_has_children';
	}

	if ( ! empty( $current_page ) ) {
		$_current_page = get_post( $current_page );
		if ( $_current_page && in_array( $page->ID, $_current_page->ancestors ) ) {
			$css_class[] = 'current_page_ancestor';
		}
		if ( $page->ID == $current_page ) {
			$css_class[] = 'current_page_item';
		} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
			$css_class[] = 'current_page_parent';
		}
	} elseif ( $page->ID == get_option( 'page_for_posts' ) ) {
		$css_class[] = 'current_page_parent';
	}

	/**
	 * Filters the list of CSS classes to include with each page item in the list.
	 *
	 * @since 2.8.0
	 *
	 * @see wp_list_pages()
	 *
	 * @param string[] $css_class    An array of CSS classes to be applied to each list item.
	 * @param WP_Post  $page         Page data object.
	 * @param int      $depth        Depth of page, used for padding.
	 * @param array    $args         An array of arguments.
	 * @param int      $current_page ID of the current page.
	 */
	$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
	$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';

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

	$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
	$args['link_after']  = empty( $args['link_after'] ) ? '' : $args['link_after'];

	$atts                 = array();
	$atts['href']         = get_permalink( $page->ID );
	$atts['aria-current'] = ( $page->ID == $current_page ) ? 'page' : '';

	/**
	 * Filters the HTML attributes applied to a page menu item's anchor element.
	 *
	 * @since 4.8.0
	 *
	 * @param array $atts {
	 *     The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
	 *
	 *     @type string $href         The href attribute.
	 *     @type string $aria_current The aria-current attribute.
	 * }
	 * @param WP_Post $page         Page data object.
	 * @param int     $depth        Depth of page, used for padding.
	 * @param array   $args         An array of arguments.
	 * @param int     $current_page ID of the current page.
	 */
	$atts = apply_filters( 'page_menu_link_attributes', $atts, $page, $depth, $args, $current_page );

	$attributes = '';
	foreach ( $atts as $attr => $value ) {
		if ( ! empty( $value ) ) {
			$value       = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
			$attributes .= ' ' . $attr . '="' . $value . '"';
		}
	}

	$output .= $indent . sprintf(
		'<li%s><a%s>%s%s%s</a>',
		$css_classes,
		$attributes,
		$args['link_before'],
		/** This filter is documented in wp-includes/post-template.php */
		apply_filters( 'the_title', $page->post_title, $page->ID ),
		$args['link_after']
	);

	if ( ! empty( $args['show_date'] ) ) {
		if ( 'modified' == $args['show_date'] ) {
			$time = $page->post_modified;
		} else {
			$time = $page->post_date;
		}

		$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
		$output     .= ' ' . mysql2date( $date_format, $time );
	}
}