_wp_menu_output( array $menu, array $submenu, bool $submenu_as_parent = true )

68function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {69	global $self, $parent_file, $submenu_file, $plugin_page, $typenow;70 71	$first = true;72	// 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes, 5 = hookname, 6 = icon_url.73	foreach ( $menu as $key => $item ) {74		$admin_is_parent = false;75		$class           = array();76		$aria_attributes = '';77		$aria_hidden     = '';78		$is_separator    = false;79 80		if ( $first ) {81			$class[] = 'wp-first-item';82			$first   = false;83		}84 85		$submenu_items = array();86		if ( ! empty( $submenu[ $item[2] ] ) ) {87			$class[]       = 'wp-has-submenu';88			$submenu_items = $submenu[ $item[2] ];89		}90 91		if ( ( $parent_file && $item[2] === $parent_file ) || ( empty( $typenow ) && $self === $item[2] ) ) {92			if ( ! empty( $submenu_items ) ) {93				$class[] = 'wp-has-current-submenu wp-menu-open';94			} else {95				$class[]          = 'current';96				$aria_attributes .= 'aria-current="page"';97			}98		} else {99			$class[] = 'wp-not-current-submenu';100			if ( ! empty( $submenu_items ) ) {101				$aria_attributes .= 'data-ariahaspopup';102			}103		}104 105		if ( ! empty( $item[4] ) ) {106			$class[] = esc_attr( $item[4] );107		}108 109		$class     = $class ? ' class="' . implode( ' ', $class ) . '"' : '';110		$id        = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : '';111		$img       = '';112		$img_style = '';113		$img_class = ' dashicons-before';114 115		if ( str_contains( $class, 'wp-menu-separator' ) ) {116			$is_separator = true;117		}118 119		/*120		 * If the string 'none' (previously 'div') is passed instead of a URL, don't output121		 * the default menu image so an icon can be added to div.wp-menu-image as background122		 * with CSS. Dashicons and base64-encoded data:image/svg_xml URIs are also handled123		 * as special cases.124		 */125		if ( ! empty( $item[6] ) ) {126			$img = '<img src="' . esc_url( $item[6] ) . '" alt="" />';127 128			if ( 'none' === $item[6] || 'div' === $item[6] ) {129				$img = '<br />';130			} elseif ( str_starts_with( $item[6], 'data:image/svg+xml;base64,' ) ) {131				$img = '<br />';132				// The value is base64-encoded data, so esc_attr() is used here instead of esc_url().133				$img_style = ' style="background-image:url(\'' . esc_attr( $item[6] ) . '\')"';134				$img_class = ' svg';135			} elseif ( str_starts_with( $item[6], 'dashicons-' ) ) {136				$img       = '<br />';137				$img_class = ' dashicons-before ' . sanitize_html_class( $item[6] );138			}139		}140		$arrow = '<div class="wp-menu-arrow"><div></div></div>';141 142		$title = wptexturize( $item[0] );143 144		// Hide separators from screen readers.145		if ( $is_separator ) {146			$aria_hidden = ' aria-hidden="true"';147		}