Export .zip with multiple files and change name and extensions (ZipArchive)

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Export .zip with multiple files and change name and extensions (ZipArchive)

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I am using ZipArchive with PHP to create a .zip file in which to export all the files that users upload to the web. Within this file there are many folders, each folder corresponds to an ID and within each one there can be one or several files (images, .pdfs ...)

It is exported well and classified in folders, the problem I have is that there are files that do not have an extension and I would like it if a file does not have it, add it. I've thought about looking at the mimetype of the file and depending on that I add it, but I do not know how to put it. Besides, each file must always be renamed with the sequence for the name: id_of_your_folder + 01, id_of_your_folder + 02, and so on ...

How can I modify my code to add an extension in case I do not have it and make sure it is correctly renamed?

    $zipname = 'nameofzip.zip';
    $local_file = $dir_adjuntos . $zipname;

    if(file_exists($local_file)){
        $overwrite = true;
    }

    $zip = new ZipArchive;
    $zip->open($local_file, $overwrite ? ZipArchive::OVERWRITE : ZipArchive::CREATE);

    foreach ($files as $key => $file) {
        $filepath = $this->getModel('Archive','ArchivesModel')->getFilenameWithFullPath($file);
        $zip->addFile($filepath, 'nameofzip'.DS.$file->archive_id.DS.$file->filename);
    }

    $zip->close();

    header('Content-Description: File Transfer');
    header('Content-Type: application/zip');
    header('Content-Disposition: attachment; filename='.basename($local_file));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Pragma: public');
    header('Content-Length: ' . filesize($local_file));
    ob_clean();
    flush();
    readfile($local_file);
    die();

Example of output:

nameofzip/9201/8728(2).pdf --> debe ser: nameofzip/9201/9201_01.pdf
nameofzip/9202/8799(1)     --> debe ser: nameofzip/9202/9202_01.pdf
nameofzip/9203/8802(1).jpg --> debe ser: nameofzip/9204/9203_01.jpg
nameofzip/9203/8802(2).jpg --> debe ser: nameofzip/9204/9203_02.jpg
nameofzip/9204/8839(1)     --> debe ser: nameofzip/9204/9204_01.jpg

php zip

asked by Norak 27.03.2018 в 09:22

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1 answer

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score 0 · Answer 1

If you only have to look for the extension of the file it is not the most convenient to use pathinfo since you would have to create an array that occupies more space. Just look for the "." and if the extension does not exist you add the previous one.

Your code would be as follows:

$zip = new ZipArchive;
$zip->open($local_file, $overwrite ? ZipArchive::OVERWRITE : ZipArchive::CREATE);
//-- En caso de que sea el primero debes tener alguna extensión por defecto
$last_ext = ""; //-- La que creas conveniente
foreach ($files as $key => $file) {
    $filepath = $this->getModel('Archive','ArchivesModel')->getFilenameWithFullPath($file);
    $ext_pos = strrpos($file->filename, '.');
    if ($ext_pos === false) {
        $file->filename = $file->filename.".".$last_ext;
    } else {//-- Agregas la última extensión valida
        $last_ext = substr($file->filename, $pos);
    }
    $zip->addFile($filepath, 'nameofzip'.DS.$file->archive_id.DS.$file->filename);
}

$zip->close();