WP_List_Table::print_column_headers( bool $with_id = true )

1399	public function print_column_headers( $with_id = true ) {1400		list( $columns, $hidden, $sortable, $primary ) = $this->get_column_info();1401 1402		$current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );1403		$current_url = remove_query_arg( 'paged', $current_url );1404 1405		// When users click on a column header to sort by other columns.1406		if ( isset( $_GET['orderby'] ) ) {1407			$current_orderby = $_GET['orderby'];1408			// In the initial view there's no orderby parameter.1409		} else {1410			$current_orderby = '';1411		}1412 1413		// Not in the initial view and descending order.1414		if ( isset( $_GET['order'] ) && 'desc' === $_GET['order'] ) {1415			$current_order = 'desc';1416		} else {1417			// The initial view is not always 'asc', we'll take care of this below.1418			$current_order = 'asc';1419		}1420 1421		if ( ! empty( $columns['cb'] ) ) {1422			static $cb_counter = 1;1423			$columns['cb']     = '<input id="cb-select-all-' . $cb_counter . '" type="checkbox" />1424			<label for="cb-select-all-' . $cb_counter . '">' .1425				'<span class="screen-reader-text">' .1426					/* translators: Hidden accessibility text. */1427					__( 'Select All' ) .1428				'</span>' .1429				'</label>';1430			++$cb_counter;1431		}1432 1433		foreach ( $columns as $column_key => $column_display_name ) {1434			$class          = array( 'manage-column', "column-$column_key" );1435			$aria_sort_attr = '';1436			$abbr_attr      = '';1437			$order_text     = '';1438 1439			if ( in_array( $column_key, $hidden, true ) ) {1440				$class[] = 'hidden';1441			}1442 1443			if ( 'cb' === $column_key ) {1444				$class[] = 'check-column';1445			} elseif ( in_array( $column_key, array( 'posts', 'comments', 'links' ), true ) ) {1446				$class[] = 'num';1447			}1448 1449			if ( $column_key === $primary ) {1450				$class[] = 'column-primary';1451			}1452 1453			if ( isset( $sortable[ $column_key ] ) ) {1454				$orderby       = isset( $sortable[ $column_key ][0] ) ? $sortable[ $column_key ][0] : '';1455				$desc_first    = isset( $sortable[ $column_key ][1] ) ? $sortable[ $column_key ][1] : false;1456				$abbr          = isset( $sortable[ $column_key ][2] ) ? $sortable[ $column_key ][2] : '';1457				$orderby_text  = isset( $sortable[ $column_key ][3] ) ? $sortable[ $column_key ][3] : '';1458				$initial_order = isset( $sortable[ $column_key ][4] ) ? $sortable[ $column_key ][4] : '';1459 1460				/*1461				 * We're in the initial view and there's no $_GET['orderby'] then check if the1462				 * initial sorting information is set in the sortable columns and use that.1463				 */1464				if ( '' === $current_orderby && $initial_order ) {1465					// Use the initially sorted column $orderby as current orderby.1466					$current_orderby = $orderby;1467					// Use the initially sorted column asc/desc order as initial order.1468					$current_order = $initial_order;1469				}1470 1471				/*1472				 * True in the initial view when an initial orderby is set via get_sortable_columns()1473				 * and true in the sorted views when the actual $_GET['orderby'] is equal to $orderby.1474				 */1475				if ( $current_orderby === $orderby ) {1476					// The sorted column. The `aria-sort` attribute must be set only on the sorted column.1477					if ( 'asc' === $current_order ) {1478						$order          = 'desc';