02 The class PageFormat
This is a structure that holds the information for a page or a set of pages in the report. It defines a page size like A4 or Letter and the orientation of the paper (portrait or landscape). Furthermore, it limits the printable area by the page margins. It also contains a flag which defines if the left and right margin are mirrored on even and odd page numbers.
The following code shows how to create a PageFormat for a Letter sized paper in landscape mode. The left margin is one inch, and the others are half an inch. The last parameter determines that the library will mirror the left and right margins. You can use this instance to pass it to the constructor of a new report.
// Format letter, landscape with margins top = 1 inch and half an inch on the other sides
$pageFormat = new ReportLib\PageFormat("Letter", 'L', 25.4/2.0, 25.4, 25.4/2.0, 25.4/2.0);
// Create report instance with the pageFormat
$report = new ReportLib\Report($pageFormat);
You can find the possible page sizes in the TCPDF library (see section 2.3.2). The letters for the orientation are straight forward the first character of the respective name: ‘P’ortrait or ‘L’andscape. The margins parameters are in millimeters.