FPDF([string orientation [, string unit [, mixed format]]])
This is the class constructor. It allows to set up the page format, the orientation and the
measure unit used in all the methods (except for the font sizes).
Default page orientation. Possible values are (case insensitive):
Default value is P.
- P or Portrait
- L or Landscape
User measure unit. Possible values are:
A point equals 1/72 of inch, that is to say about 0.35 mm (an inch being 2.54 cm). This
is a very common unit in typography; font sizes are expressed in that unit.
- pt: point
- mm: millimeter
- cm: centimeter
- in: inch
Default value is mm.
The format used for pages. It can be either one of the following values (case insensitive):
or a custom format in the form of a two-element array containing the width and the height
(expressed in the unit given by unit).