PHP Get height and width in Pdf file proprieties

Question

I have a PDF file. I would to get it height and width in mm.

So I do an exec(pdfinfo ... ); I have this result :

Creator: Adobe InDesign CS5 (

Answer 1

Why not use plain PHP to get the pdf dimensions?

eof()) {
        if (preg_match("/".$box."\[[0-9]{1,}.[0-9]{1,} [0-9]{1,}.[0-9]{1,} ([0-9]{1,}.[0-9]{1,}) ([0-9]{1,}.[0-9]{1,})\]/", $stream->fgets(), $matches)) {
            $result["width"] = $matches[1];
            $result["height"] = $matches[2]; 
            break;
        }
    }

    $stream = null;

    return $result;
}

var_dump(get_pdf_dimensions("file.pdf"));