Zip archive either corrupted or empty


#1

i am trying to create the zip backup to migrate my site. i am getting the message “Successfully Created archive zipper…” but when i try to open it to check to make sure all the files are there, there are no files. And ‘WinOpen’ is telling me the archive is corrupt or invalid.

any suggestions?

thank you in advance for your help.


#2

Did you use unzipper.php ?
If not then try using that… it always works for me


#3

when I double click the archive, it doesn’t even show any files that are inside. ill try downloading unzipper

thank you


#4

I’m sorry, I don’t know what unzipper.php is. I have to upload it into my folder on the server?


#5

Yes upload it into your public?_html

Or you can make a new file called unzipper.php and paste this code into it

<?php
/**
 * The Unzipper extracts .zip or .rar archives and .gz files on webservers.
 * It's handy if you do not have shell access. E.g. if you want to upload a lot
 * of files (php framework or image collection) as an archive to save time.
 * As of version 0.1.0 it also supports creating archives.
 *
 * @author  Andreas Tasch, at[tec], attec.at
 * @license GNU GPL v3
 * @package attec.toolbox
 * @version 0.1.0
 */
define('VERSION', '0.1.0');

$timestart = microtime(TRUE);
$GLOBALS['status'] = array();

$unzipper = new Unzipper;
if (isset($_POST['dounzip'])) {
  //check if an archive was selected for unzipping
  $archive = isset($_POST['zipfile']) ? strip_tags($_POST['zipfile']) : '';
  $destination = isset($_POST['extpath']) ? strip_tags($_POST['extpath']) : '';
  $unzipper->prepareExtraction($archive, $destination);
}

if (isset($_POST['dozip'])) {
  $zippath = !empty($_POST['zippath']) ? strip_tags($_POST['zippath']) : '.';
  // Resulting zipfile e.g. zipper--2016-07-23--11-55.zip
  $zipfile = 'zipper-' . date("Y-m-d--H-i") . '.zip';
  Zipper::zipDir($zippath, $zipfile);
}

$timeend = microtime(TRUE);
$time = $timeend - $timestart;

/**
 * Class Unzipper
 */
class Unzipper {
  public $localdir = '.';
  public $zipfiles = array();

  public function __construct() {

    //read directory and pick .zip and .gz files
    if ($dh = opendir($this->localdir)) {
      while (($file = readdir($dh)) !== FALSE) {
        if (pathinfo($file, PATHINFO_EXTENSION) === 'zip'
          || pathinfo($file, PATHINFO_EXTENSION) === 'gz'
          || pathinfo($file, PATHINFO_EXTENSION) === 'rar'
        ) {
          $this->zipfiles[] = $file;
        }
      }
      closedir($dh);

      if (!empty($this->zipfiles)) {
        $GLOBALS['status'] = array('info' => '.zip or .gz or .rar files found, ready for extraction');
      }
      else {
        $GLOBALS['status'] = array('info' => 'No .zip or .gz or rar files found. So only zipping functionality available.');
      }
    }
  }

  /**
   * Prepare and check zipfile for extraction.
   *
   * @param $archive
   * @param $destination
   */
  public function prepareExtraction($archive, $destination) {
    // Determine paths.
    if (empty($destination)) {
      $extpath = $this->localdir;
    }
    else {
      $extpath = $this->localdir . '/' . $destination;
      // todo move this to extraction function
      if (!is_dir($extpath)) {
        mkdir($extpath);
      }
    }
    //allow only local existing archives to extract
    if (in_array($archive, $this->zipfiles)) {
      self::extract($archive, $extpath);
    }
  }

  /**
   * Checks file extension and calls suitable extractor functions.
   *
   * @param $archive
   * @param $destination
   */
  public static function extract($archive, $destination) {
    $ext = pathinfo($archive, PATHINFO_EXTENSION);
    switch ($ext) {
      case 'zip':
        self::extractZipArchive($archive, $destination);
        break;
      case 'gz':
        self::extractGzipFile($archive, $destination);
        break;
      case 'rar':
        self::extractRarArchive($archive, $destination);
        break;
    }

  }

  /**
   * Decompress/extract a zip archive using ZipArchive.
   *
   * @param $archive
   * @param $destination
   */
  public static function extractZipArchive($archive, $destination) {
    // Check if webserver supports unzipping.
    if (!class_exists('ZipArchive')) {
      $GLOBALS['status'] = array('error' => 'Error: Your PHP version does not support unzip functionality.');
      return;
    }

    $zip = new ZipArchive;

    // Check if archive is readable.
    if ($zip->open($archive) === TRUE) {
      // Check if destination is writable
      if (is_writeable($destination . '/')) {
        $zip->extractTo($destination);
        $zip->close();
        $GLOBALS['status'] = array('success' => 'Files unzipped successfully');
      }
      else {
        $GLOBALS['status'] = array('error' => 'Error: Directory not writeable by webserver.');
      }
    }
    else {
      $GLOBALS['status'] = array('error' => 'Error: Cannot read .zip archive.');
    }
  }

  /**
   * Decompress a .gz File.
   *
   * @param $archive
   * @param $destination
   */
  public static function extractGzipFile($archive, $destination) {
    // Check if zlib is enabled
    if (!function_exists('gzopen')) {
      $GLOBALS['status'] = array('error' => 'Error: Your PHP has no zlib support enabled.');
      return;
    }

    $filename = pathinfo($archive, PATHINFO_FILENAME);
    $gzipped = gzopen($archive, "rb");
    $file = fopen($filename, "w");

    while ($string = gzread($gzipped, 4096)) {
      fwrite($file, $string, strlen($string));
    }
    gzclose($gzipped);
    fclose($file);

    // Check if file was extracted.
    if (file_exists($destination . '/' . $filename)) {
      $GLOBALS['status'] = array('success' => 'File unzipped successfully.');
    }
    else {
      $GLOBALS['status'] = array('error' => 'Error unzipping file.');
    }

  }

  /**
   * Decompress/extract a Rar archive using RarArchive.
   *
   * @param $archive
   * @param $destination
   */
  public static function extractRarArchive($archive, $destination) {
    // Check if webserver supports unzipping.
    if (!class_exists('RarArchive')) {
      $GLOBALS['status'] = array('error' => 'Error: Your PHP version does not support .rar archive functionality. <a class="info" href="http://php.net/manual/en/rar.installation.php" target="_blank">How to install RarArchive</a>');
      return;
    }
    // Check if archive is readable.
    if ($rar = RarArchive::open($archive)) {
      // Check if destination is writable
      if (is_writeable($destination . '/')) {
        $entries = $rar->getEntries();
        foreach ($entries as $entry) {
          $entry->extract($destination);
        }
        $rar->close();
        $GLOBALS['status'] = array('success' => 'Files extracted successfully.');
      }
      else {
        $GLOBALS['status'] = array('error' => 'Error: Directory not writeable by webserver.');
      }
    }
    else {
      $GLOBALS['status'] = array('error' => 'Error: Cannot read .rar archive.');
    }
  }

}

/**
 * Class Zipper
 *
 * Copied and slightly modified from http://at2.php.net/manual/en/class.ziparchive.php#110719
 * @author umbalaconmeogia
 */
class Zipper {
  /**
   * Add files and sub-directories in a folder to zip file.
   *
   * @param string     $folder
   *   Path to folder that should be zipped.
   *
   * @param ZipArchive $zipFile
   *   Zipfile where files end up.
   *
   * @param int        $exclusiveLength
   *   Number of text to be exclusived from the file path.
   */
  private static function folderToZip($folder, &$zipFile, $exclusiveLength) {
    $handle = opendir($folder);

    while (FALSE !== $f = readdir($handle)) {
      // Check for local/parent path or zipping file itself and skip.
      if ($f != '.' && $f != '..' && $f != basename(__FILE__)) {
        $filePath = "$folder/$f";
        // Remove prefix from file path before add to zip.
        $localPath = substr($filePath, $exclusiveLength);

        if (is_file($filePath)) {
          $zipFile->addFile($filePath, $localPath);
        }
        elseif (is_dir($filePath)) {
          // Add sub-directory.
          $zipFile->addEmptyDir($localPath);
          self::folderToZip($filePath, $zipFile, $exclusiveLength);
        }
      }
    }
    closedir($handle);
  }

  /**
   * Zip a folder (including itself).
   * Usage:
   *   Zipper::zipDir('path/to/sourceDir', 'path/to/out.zip');
   *
   * @param string $sourcePath
   *   Relative path of directory to be zipped.
   *
   * @param string $outZipPath
   *   Relative path of the resulting output zip file.
   */
  public static function zipDir($sourcePath, $outZipPath) {
    $pathInfo = pathinfo($sourcePath);
    $parentPath = $pathInfo['dirname'];
    $dirName = $pathInfo['basename'];

    $z = new ZipArchive();
    $z->open($outZipPath, ZipArchive::CREATE);
    $z->addEmptyDir($dirName);
    if ($sourcePath == $dirName) {
      self::folderToZip($sourcePath, $z, 0);
    }
    else {
      self::folderToZip($sourcePath, $z, strlen("$parentPath/"));
    }
    $z->close();

    $GLOBALS['status'] = array('success' => 'Successfully created archive ' . $outZipPath);
  }
}
?>

<!DOCTYPE html>
<html>
<head>
  <title>File Unzipper + Zipper</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <style type="text/css">
    <!--
    body {
      font-family: Arial, sans-serif;
      line-height: 150%;
    }

    label {
      display: block;
      margin-top: 20px;
    }

    fieldset {
      border: 0;
      background-color: #EEE;
      margin: 10px 0 10px 0;
    }

    .select {
      padding: 5px;
      font-size: 110%;
    }

    .status {
      margin: 0;
      margin-bottom: 20px;
      padding: 10px;
      font-size: 80%;
      background: #EEE;
      border: 1px dotted #DDD;
    }

    .status--ERROR {
      background-color: red;
      color: white;
      font-size: 120%;
    }

    .status--SUCCESS {
      background-color: green;
      font-weight: bold;
      color: white;
      font-size: 120%
    }

    .small {
      font-size: 0.7rem;
      font-weight: normal;
    }

    .version {
      font-size: 80%;
    }

    .form-field {
      border: 1px solid #AAA;
      padding: 8px;
      width: 280px;
    }

    .info {
      margin-top: 0;
      font-size: 80%;
      color: #777;
    }

    .submit {
      background-color: #378de5;
      border: 0;
      color: #ffffff;
      font-size: 15px;
      padding: 10px 24px;
      margin: 20px 0 20px 0;
      text-decoration: none;
    }

    .submit:hover {
      background-color: #2c6db2;
      cursor: pointer;
    }
    -->
  </style>
</head>
<body>
<p class="status status--<?php echo strtoupper(key($GLOBALS['status'])); ?>">
  Status: <?php echo reset($GLOBALS['status']); ?><br/>
  <span class="small">Processing Time: <?php echo $time; ?> seconds</span>
</p>
<form action="" method="POST">
  <fieldset>
    <h1>Archive Unzipper</h1>
    <label for="zipfile">Select .zip or .rar archive or .gz file you want to extract:</label>
    <select name="zipfile" size="1" class="select">
      <?php foreach ($unzipper->zipfiles as $zip) {
        echo "<option>$zip</option>";
      }
      ?>
    </select>
    <label for="extpath">Extraction path (optional):</label>
    <input type="text" name="extpath" class="form-field" />
    <p class="info">Enter extraction path without leading or trailing slashes (e.g. "mypath"). If left empty current directory will be used.</p>
    <input type="submit" name="dounzip" class="submit" value="Unzip Archive"/>
  </fieldset>

  <fieldset>
    <h1>Archive Zipper</h1>
    <label for="zippath">Path that should be zipped (optional):</label>
    <input type="text" name="zippath" class="form-field" />
    <p class="info">Enter path to be zipped without leading or trailing slashes (e.g. "zippath"). If left empty current directory will be used.</p>
    <input type="submit" name="dozip" class="submit" value="Zip Archive"/>
  </fieldset>
</form>
<p class="version">Unzipper version: <?php echo VERSION; ?></p>
</body>
</html>