__construct([string orientation [, string unit [, mixed size]]])
orientation
P
or Portrait
L
or Landscape
P
.
unit
pt
: pointmm
: millimetercm
: centimeterin
: inchmm
.
size
A3
A4
A5
Letter
Legal
unit
).A4
.
$pdf = new FPDF('P','mm',array(100,150));