return $data[0
];
} /**
* Simple helper function which actually merges a given array of document-paths
*
* @param array<string> $paths
*/
private function mergeDocuments(array
$paths): void
{ $pdf =
new Fpdi();
foreach ($paths as $path) { $numPages =
$pdf->
setSourceFile($path);
for ($i = 1;
$i <=
$numPages; ++
$i) { $template =
$pdf->
importPage($i);
$size =
$pdf->
getTemplateSize($template);
if (!\
is_array($size)) { continue;
} $pdf->
AddPage('P',
[$size['width'
],
$size['height'
]]);
$pdf->
useTemplate($template);
}