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    zip_open

    (PHP 4 >= 4.1.0, PHP 5 >= 5.2.0, PHP 7, PECL zip >= 1.0.0)

    zip_open — Open a ZIP file archive

    Descrierea

    zip_open ( string $filename ) : resource|int|false

    Opens a new zip archive for reading.

    Parametri

    filename

    The file name of the ZIP archive to open.

    Valorile întoarse

    Returns a resource handle for later use with zip_read() and zip_close() or returns either false or the number of error if filename does not exist or in case of other error.

    Istoricul schimbărilor

    Versiune Descriere
    8.0.0 This function is deprecated in favor of the Object API, see ZipArchive::open().

    A se vedea și

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    User Contributed Notes 13 notes

    up
    23
    david at php dot net
    15 years ago
    Note that the Zip functions return an integer error number in the event of error. So:

    <?php
    $zip     = zip_open($file);

    if (    $zip) {
    ?>

    is incorrect. Instead use:

    <?php
    $zip     = zip_open($file);

    if (    is_resource($zip)) {
    ?>
    up
    3
    saulius at solmetra dot lt
    17 years ago
    Some older PHP versions used to return false if zip_open failed, and newer versions return the number of error (as integer), so instead of this:

    $zip = zip_open($zip_file);
    if ($zip) {
      // consider zip file opened successfully
    }

    use this:

    $zip = zip_open($zip_file);
    if (is_resource($zip)) {
      // consider zip file opened successfully
    }

    You may also use this function to get the error message by it's number:

    function zipFileErrMsg($errno) {
      // using constant name as a string to make this function PHP4 compatible
      $zipFileFunctionsErrors = array(
        'ZIPARCHIVE::ER_MULTIDISK' => 'Multi-disk zip archives not supported.',
        'ZIPARCHIVE::ER_RENAME' => 'Renaming temporary file failed.',
        'ZIPARCHIVE::ER_CLOSE' => 'Closing zip archive failed',
        'ZIPARCHIVE::ER_SEEK' => 'Seek error',
        'ZIPARCHIVE::ER_READ' => 'Read error',
        'ZIPARCHIVE::ER_WRITE' => 'Write error',
        'ZIPARCHIVE::ER_CRC' => 'CRC error',
        'ZIPARCHIVE::ER_ZIPCLOSED' => 'Containing zip archive was closed',
        'ZIPARCHIVE::ER_NOENT' => 'No such file.',
        'ZIPARCHIVE::ER_EXISTS' => 'File already exists',
        'ZIPARCHIVE::ER_OPEN' => 'Can\'t open file',
        'ZIPARCHIVE::ER_TMPOPEN' => 'Failure to create temporary file.',
        'ZIPARCHIVE::ER_ZLIB' => 'Zlib error',
        'ZIPARCHIVE::ER_MEMORY' => 'Memory allocation failure',
        'ZIPARCHIVE::ER_CHANGED' => 'Entry has been changed',
        'ZIPARCHIVE::ER_COMPNOTSUPP' => 'Compression method not supported.',
        'ZIPARCHIVE::ER_EOF' => 'Premature EOF',
        'ZIPARCHIVE::ER_INVAL' => 'Invalid argument',
        'ZIPARCHIVE::ER_NOZIP' => 'Not a zip archive',
        'ZIPARCHIVE::ER_INTERNAL' => 'Internal error',
        'ZIPARCHIVE::ER_INCONS' => 'Zip archive inconsistent',
        'ZIPARCHIVE::ER_REMOVE' => 'Can\'t remove file',
        'ZIPARCHIVE::ER_DELETED' => 'Entry has been deleted',
      );
      $errmsg = 'unknown';
      foreach ($zipFileFunctionsErrors as $constName => $errorMessage) {
        if (defined($constName) and constant($constName) === $errno) {
          return 'Zip File Function error: '.$errorMessage;
        }
      }
      return 'Zip File Function error: unknown';
    }

    $zip = zip_open($zip_file);
    if (!is_resource($zip)) {
      die(zipFileErrMsg($zip));
    }
    up
    6
    fuljencio at gmail dot com
    15 years ago
    getting a mozilla addon version (a firefox extension, for instance):

    <?php
            function get_addon_version($path)
        {
                // open zip
                $zip = zip_open($path);

                    // find entry
                    do {
                        $entry = zip_read($zip);
                } while (    $entry && zip_entry_name($entry) != "install.rdf");

                    // open entry
                    zip_entry_open($zip, $entry, "r");

                        // read entry
                        $entry_content = zip_entry_read($entry, zip_entry_filesize($entry));

                        // position of <em:version>
                        $version_open_pos = strpos($entry_content, "<em:version>");

                        // position of </em:version>
                        $version_close_pos = strpos($entry_content, "</em:version>", $version_open_pos);

                        // version
                        $version = substr(
                                $entry_content,
                                $version_open_pos + strlen("<em:version>"),
                                $version_close_pos - ($version_open_pos + strlen("<em:version>"))
                    );

                    // close entry
                    zip_entry_close($entry);

                // close zip
                zip_close($zip);

            return     $version;
        }
    ?>
    up
    1
    barbarinasv at interfree dot it
    19 years ago
    Function zip_entry_read() written by "bisqwit at iki dot fi" has to be modified to read entire files:

    <?php
    function zip_entry_read(&$res, $nbytes) {
        while (!    feof($res['fp'])) {
                $contents .= fread($res['fp'], $nbytes);
        }
        return     $contents;
    }
    ?>
    up
    1
    bisqwit at iki dot fi
    19 years ago
    If your PHP installation does not have the zip_open function, and you can't install it for whatever reason, you can use these functions instead, if the server has access to the "unzip" utility (most Linux systems do).
    So far I have tested these only in Fedora Core 3.
    Use at your own risk.

    <?php

    function ShellFix($s)
    {
      return     "'".str_replace("'", "'\''", $s)."'";
    }

    function     zip_open($s)
    {
          $fp = @fopen($s, 'rb');
      if(!    $fp) return false;
     
          $lines = Array();
          $cmd = 'unzip -v '.shellfix($s);
          exec($cmd, $lines);
     
          $contents = Array();
          $ok=false;
      foreach(    $lines as $line) 
      {
        if(    $line[0]=='-') { $ok=!$ok; continue; }
        if(!    $ok) continue;
       
            $length = (int)$line;
            $fn = trim(substr($line,58));
       
            $contents[] = Array('name' => $fn, 'length' => $length);
      }
     
      return
        Array(    'fp'       => $fp, 
                  'name'     => $s,
                  'contents' => $contents,
                  'pointer'  => -1);
    }                          
    function     zip_read(&$fp)
    {
      if(!    $fp) return false;
     
          $next = $fp['pointer'] + 1;
      if(    $next >= count($fp['contents'])) return false;

          $fp['pointer'] = $next;
      return     $fp['contents'][$next];
    }
    function     zip_entry_name(&$res)
    {
      if(!    $res) return false;
      return     $res['name'];
    }                          
    function     zip_entry_filesize(&$res)
    {
      if(!    $res) return false;
      return     $res['length'];
    }
    function     zip_entry_open(&$fp, &$res)
    {
      if(!    $res) return false;

          $cmd = 'unzip -p '.shellfix($fp['name']).' '.shellfix($res['name']);
     
          $res['fp'] = popen($cmd, 'r');
      return !!    $res['fp'];  
    }
    function     zip_entry_read(&$res, $nbytes)
    {
      return     fread($res['fp'], $nbytes);
    }
    function     zip_entry_close(&$res)
    {
          fclose($res['fp']);
      unset(    $res['fp']);
    }
    function     zip_close(&$fp)
    {
          fclose($fp['fp']);
    }
    ?>
    up
    1
    Anonymous
    16 years ago
    Note, this function ignores custom stream wrappers, like the ones created by stream_wrapper_register - which is really too bad.
    up
    1
    robert at cotran dot ca
    19 years ago
    The zip_entry_read above is wrong.  Since the file was opened with popen, you have to read the file in chunks, so zip_entry_read should read:

    function zip_entry_read(&$res, $nbytes)
    {
        $contents = '';
        while (!feof($res['fp'])) {
            $contents .= fread($res['fp'], 8192);
        }
        return $contents;
    }

    Otherwise, it was a very useful library.  Thanks!
    up
    2
    ohcc at 163 dot com
    8 years ago
    The zip archive will NOT be saved on disk before ZipArchive::close() is called. (ZipArchive::close will be called automatically at the end of the script if you don't write that code.)

    If you want to delete a file after adding it to the zip archive, you should delete it after ZipArchive::close() is called. Otherwise, the file will be deleted before actually being added into the archive, which will make your zip archive fail to be saved.

    <?php
        $za     = new ZipArchive();
            $za->open('./xc.zip', ZipArchive::CREATE|ZipArchive::OVERWRITE);
            $file = './notes.txt';
        if(     true === $za->addFile($file)){
                unlink($file);
        }
        if(!    $za->close()){
            echo     'failure.';
        }
    ?>
    up
    2
    ponsho
    18 years ago
    For bisqwit at iki dot fi solution of alternative functions there's just one problem when trying to read the file thats because some bug in fread when handling from popen so it just load 8192 bytes here's the function corrected.

    <?php

            function zip_entry_read(&$res, $nbytes)
        {
         while (    $s = fgets($res['fp'],1024)) {
             $data  .= $s;
         }
          return     $data;
        }
    ?>
    up
    0
    flominator at gmx dot net
    17 years ago
    @bisqwit at iki dot fi: If you're using older versions of PHP this skript might only read the first 8192 bytes. Great thing, anyway!
    up
    -1
    alban dot lopez+php dot net at gmail dot com
    16 years ago
    See this class to make, read Infos or extract ZIP archive.
    see EasyArchive.class.php on http://ajaxbrowser.free.fr/ to manage like that ZIP, GZIP, BZIP and TAR archive.

    <?
    $ARCHIVE     = new zip;

    $ARCHIVE->makeZip('./','./toto.zip'); // make an ZIP archive
    var_export($ARCHIVE->infosZip('./toto.zip'), false); // get infos of this ZIP archive (without files content)
    var_export($ARCHIVE->infosZip('./toto.zip')); // get infos of this ZIP archive (with files content)
    $ARCHIVE->extractZip('./toto.zip', './1/'); //

    class zip
    {
        public function     infosZip ($src, $data=true)
        {
            if ((    $zip = zip_open(realpath($src))))
            {
                while ((    $zip_entry = zip_read($zip)))
                {
                        $path = zip_entry_name($zip_entry);
                    if (    zip_entry_open($zip, $zip_entry, "r"))
                    {
                            $content[$path] = array (
                                'Ratio' => zip_entry_filesize($zip_entry) ? round(100-zip_entry_compressedsize($zip_entry) / zip_entry_filesize($zip_entry)*100, 1) : false,
                                'Size' => zip_entry_compressedsize($zip_entry),
                                'NormalSize' => zip_entry_filesize($zip_entry));
                        if (    $data)
                                $content[$path]['Data'] = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
                            zip_entry_close($zip_entry);
                    }
                    else
                            $content[$path] = false;
                }
                    zip_close($zip);
                return     $content;
            }
            return     false;
        }
        public function     extractZip ($src, $dest)
        {
                $zip = new ZipArchive;
            if (    $zip->open($src)===true)
            {
                    $zip->extractTo($dest);
                    $zip->close();
                return     true;
            }
            return     false;
        }
        public function     makeZip ($src, $dest)
        {
                $zip = new ZipArchive;
                $src = is_array($src) ? $src : array($src);
            if (    $zip->open($dest, ZipArchive::CREATE) === true)
            {
                foreach (    $src as $item)
                    if (    file_exists($item))
                            $this->addZipItem($zip, realpath(dirname($item)).'/', realpath($item).'/');
                    $zip->close();
                return     true;
            }
            return     false;
        }
        private function     addZipItem ($zip, $racine, $dir)
        {
            if (    is_dir($dir))
            {
                    $zip->addEmptyDir(str_replace($racine, '', $dir));
                    $lst = scandir($dir);
                        array_shift($lst);
                        array_shift($lst);
                foreach (    $lst as $item)
                        $this->addZipItem($zip, $racine, $dir.$item.(is_dir($dir.$item)?'/':''));
            }
            elseif (    is_file($dir))
                    $zip->addFile($dir, str_replace($racine, '', $dir));
        }
    }
    ?>
    up
    -1
    xsign dot dll at clansuite dot com
    16 years ago
    If you want to simply extract a strain of a zip file, then use this func. Maybe it helps:

    <?php
    /**
    * This method unzips a directory within a zip-archive
    *
    * @author Florian 'x!sign.dll' Wolf
    * @license LGPL v2 or later
    * @link http://www.xsigndll.de
    * @link http://www.clansuite.com
    */

    function extractZip( $zipFile = '', $dirFromZip = '' )
    {   
            define(DIRECTORY_SEPARATOR, '/');

            $zipDir = getcwd() . DIRECTORY_SEPARATOR;
            $zip = zip_open($zipDir.$zipFile);

        if (    $zip)
        {
            while (    $zip_entry = zip_read($zip))
            {
                    $completePath = $zipDir . dirname(zip_entry_name($zip_entry));
                    $completeName = $zipDir . zip_entry_name($zip_entry);
               
                    // Walk through path to create non existing directories
                // This won't apply to empty directories ! They are created further below
                    if(!file_exists($completePath) && preg_match( '#^' . $dirFromZip .'.*#', dirname(zip_entry_name($zip_entry)) ) )
                {
                        $tmp = '';
                    foreach(    explode('/',$completePath) AS $k)
                    {
                            $tmp .= $k.'/';
                        if(!    file_exists($tmp) )
                        {
                            @    mkdir($tmp, 0777);
                        }
                    }
                }
               
                if (    zip_entry_open($zip, $zip_entry, "r"))
                {
                    if(     preg_match( '#^' . $dirFromZip .'.*#', dirname(zip_entry_name($zip_entry)) ) )
                    {
                        if (    $fd = @fopen($completeName, 'w+'))
                        {
                                fwrite($fd, zip_entry_read($zip_entry, zip_entry_filesize($zip_entry)));
                                fclose($fd);
                        }
                        else
                        {
                                // We think this was an empty directory
                                mkdir($completeName, 0777);
                        }
                            zip_entry_close($zip_entry);
                    }
                }
            }
                zip_close($zip);
        }
        return     true;
    }

    // The call to exctract a path within the zip file
    extractZip( 'clansuite.zip', 'core/filters' );
    ?>
    up
    -3
    strefrextor at gmail [.] com
    15 years ago
    my basic extract zip file function

    <?php
            function ezip($zip, $hedef = '')
        {
                $root = $_SERVER['DOCUMENT_ROOT'];
                $zip = zip_open($root . $zip);
            while(    $zip_icerik = zip_read($zip)):
                    $zip_dosya = zip_entry_name($zip_icerik);
                if(    strpos($zip_dosya, '.')):
                        $hedef_yol = $root . $hedef . 'x/'.$zip_dosya;
                        touch($hedef_yol);
                        $yeni_dosya = fopen($hedef_yol, 'w+');
                        fwrite($yeni_dosya, zip_entry_read($zip_icerik));
                        fclose($yeni_dosya);
                else:
                    @    mkdir($root . $hedef . 'x/'.$zip_dosya);
                endif;
            endwhile;
        }
       
            ezip('files.zip', 'unzip_files/');
    ?>
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