Precisely as before you can also have a title spanning all the columns. This title is specified with the property tableTitle of the scale. Specifying a table title will automatically adjust the height of the column titles to fit the table title. The small code snippet below shows how to add a title.
$graph
->scale->tableTitle->
Set('Phase 1');
$graph->scale->
tableTitle->
SetFont(
FF_ARIAL,
FS_NORMAL,12);
$graph->scale->
SetTableTitleBackground(
'darkgreen@0.6');
$graph->scale->
tableTitle->
Show(true);
A full example of this is shown below