$worksheet1->write(0,0,"A1");
$worksheet1->write(0,1,"B1");
$worksheet1->write(0,2, "C1");

$worksheet1->write(1,0,"A2");
$worksheet1->write(1,1,"B2");
$worksheet1->write(1,2, "C2");

$worksheet1->write(2,0,"A3");
$worksheet1->write(2,1,"B3");
$worksheet1->write(2,2, "C3");