mPDF Manual – mPDF Variables


mPDF ≥ 2.3

Default: false

If default page orientation is P(Portrait), then adding new page L(Landscape) causes the left/right margins to be used as top/bottom, and vice-versa.

(NB similar to forcePortraitHeaders which does the same but also rotates the HTML headers/footers.)

NB - if using OddEven (double-sided document), it is the Portrait orientation L/R margins that alternate.

When adding a page, you must only call $mpdf->AddPage('L') or <pagebreak orientation="landscape" />. If you try to set new margins/headers etc. for new landscape pages when forcePortraitMargins = true, it will go wrong.


Set at document initiation

// Require composer autoload
require_once __DIR__ . '/vendor/autoload.php';

$mpdf = new \Mpdf\Mpdf(['forcePortraitMargins' => true]);

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