What are the best practices for checking page size and trim box of a PDF file in PHP?

To check the page size and trim box of a PDF file in PHP, you can use the `FPDF` library which allows you to extract information about the PDF file. You can then use this information to determine the page size and trim box dimensions. 

// Include the FPDF library
require('fpdf.php');

// Create a new instance of FPDF
$pdf = new FPDF();

// Load the PDF file
$pdf->Open('example.pdf');

// Get the number of pages in the PDF
$pageCount = $pdf->PageCount();

// Loop through each page to get the page size and trim box
for($i = 1; $i <= $pageCount; $i++){
    $pdf->setPage($i);
    $pageSize = $pdf->GetPageSize();
    $trimBox = $pdf->GetTrimBox();
    
    echo "Page $i - Page Size: " . $pageSize[0] . " x " . $pageSize[1] . ", Trim Box: " . $trimBox[0] . " x " . $trimBox[1] . "\n";
}

Keywords

PDF file size trim box PHP functions libraries

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