lib/Post_Type_Columns.php
public function columns_sortable( $columns ) {
		foreach ( $this->columns as $slug => $column ) {
			// Remove column when it’s not sortable.
			if ( ! $column['sortable'] ) {
				unset( $columns[ $slug ] );
				continue;
			}
		}

		return $columns;
	}
public function columns_sortable( $columns ) {
		foreach ( $this->columns as $slug => $column ) {
			// Remove column when it’s not sortable.
			if ( ! $column['sortable'] ) {
				unset( $columns[ $slug ] );
				continue;
			}
		}

		return $columns;
	}
public function columns_sortable ( $ columns ) { foreach ( $ this -> columns as $ slug => $ column ) { // Remove column when it’s not sortable. if ( ! $ column [ 'sortable' ] ) { unset ( $ columns [ $ slug ] ) ; continue ; } } return $ columns ; }
Filters sortable columns.

@param array $columns An array of existing columns.

@return array Filtered array.
Filters sortable columns .