CODEWITHSUNDEEP
phpzip
nnikolay
nnikolay

Reputation: 1751

PHP - read zip file contents without saving on server

I have a remote ZIP file, and I need to read the content of a file located in the zip file, without having to copy the zip file to our server. There should be some solution to solve this, but I can't find it.

Example:
URL - http://example.com/feed.zip and
File in the ZIP Archive is feed.xml

I need to read the content of feed.xml and save it in one variable. Thats it.

I have try with $z = new ZipArchive(); and open, but open can only read files from the server and not remote files.

Upvotes: 1

Views: 4933

Answers (3)

rob006
rob006

Reputation: 22174

I had the same problem and the best I could get was saving zip content to temp file and using ZipArchive to get content of zipped file:

public static function unzip($zipData) {
    // save content into temp file
    $tempFile = tempnam(sys_get_temp_dir(), 'feed');
    file_put_contents($tempFile, $zipData);

    // unzip content of first file from archive
    $zip = new ZipArchive();
    $zip->open($tempFile);
    $data = $zip->getFromIndex(0);

    // cleanup temp file
    $zip->close();
    unlink($tempFile);

    return $data;
}

This is basically implementation of @mauris suggestion.

Upvotes: 3

mario
mario

Reputation: 145482

A super lazy solution would be:

$feed = `wget http://example.com/feed.zip -qO-  | unzip - -p feed.xml`;

Note that the url should be escaped (escapeshellarg) if it's not a fixed string.

But you could also investigate other ZIP classes than the built-in ZipArchive. PEAR or PclZip might allow to read from streams without workarounds. (But php://memory or a string stream wrapper might be feasible as well, if you're really bent on eschewing temporary files.)

Upvotes: 5

mauris
mauris

Reputation: 43619

That requires the concept of temporary files. Technically speaking: yes, you are going to make a temporary copy of the remote zip file that is locally available because your ZipArchive does not work on remote zip files at all.

Following these steps to implement temporary copy should help you:

  1. Make a copy of the remote zip file to a temporary folder.
  2. Use ZipArchive to parse the local copy of the zip file.
  3. Read information in your feed.xml file.
  4. Close and everything and delete the local copy of the zip file.

Upvotes: 2

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