auto orientation (#11)

Get the orientation of the page automatically

Author: laraben

src/PDFMerger/PDFMerger.php

@@ -219,8 +219,9 @@ protected function doMerge($orientation, $duplexSafe) {
                 for ($i = 1; $i <= $count; $i++) {
                     $template   = $oFPDI->importPage($i);
                     $size       = $oFPDI->getTemplateSize($template);
+                    $autoOrientation = ($size['h'] > $size['w']) ? 'P' : 'L';
 
-                    $oFPDI->AddPage($file['orientation'], [$size['w'], $size['h']]);
+                    $oFPDI->AddPage($autoOrientation, [$size['w'], $size['h']]);
                     $oFPDI->useTemplate($template);
                 }
             } else {
@@ -229,8 +230,9 @@ protected function doMerge($orientation, $duplexSafe) {
                         throw new \Exception("Could not load page '$page' in PDF '".$file['name']."'. Check that the page exists.");
                     }
                     $size = $oFPDI->getTemplateSize($template);
+                    $autoOrientation = ($size['h'] > $size['w']) ? 'P' : 'L';
 
-                    $oFPDI->AddPage($file['orientation'], [$size['w'], $size['h']]);
+                    $oFPDI->AddPage($autoOrientation, [$size['w'], $size['h']]);
                     $oFPDI->useTemplate($template);
                 }
             }