Php to Excel --> some difficulties

[SCoder]

I'd like to export data from a webpage to Excel. It works but I still have some problems.
first I don't know how to create borders around my cells...
here is the VBA code which I can't "translate"

    With Selection.Borders(xlEdgeLeft)
        .LineStyle = xlContinuous
        .Weight = xlMedium
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeTop)
        .LineStyle = xlContinuous
        .Weight = xlMedium
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeBottom)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With
    With Selection.Borders(xlEdgeRight)
        .LineStyle = xlContinuous
        .Weight = xlThin
        .ColorIndex = xlAutomatic
    End With

I tried using this, but it doesn't work

$cell=$sheet->Range('A'.$ligne);
$lacellule=$cell->Borders->xlEdgeLeft;
$lacellule->Weight='xlMedium';

another problem : how can I insert a row?
for example I select the 24th row (which is already well formated), and I insert another row, which will automaticaly have the same format (colors & borders)