zip_open

(PHP 4 >= 4.1.0, PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL zip >= 1.0.0)

zip_open — 打开ZIP存档文件

说明

zip_open ( string $filename ) : resource

打开一个新的ZIP归档文件进行读取。

参数

filename

待打开ZIP归档的文件名。

返回值

成功的时候返回一个资源句柄供函数zip_read() 和 zip_close()后续使用; 如果filename 文件不存在或者出现其他错误，则会返回相应的错误码。

参见

User Contributed Notes

ohcc at 163 dot com 16-Dec-2015 10:31
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.';
    }
?>
fuljencio at gmail dot com 13-Oct-2009 08:34
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;
    }
?>
strefrextor at gmail [.] com 13-Sep-2009 04:43
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/');
?>
david at php dot net 20-Jun-2009 03:32
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)) {
?>
Anonymous 16-Sep-2008 11:17
Note, this function ignores custom stream wrappers, like the ones created by stream_wrapper_register - which is really too bad.
xsign dot dll at clansuite dot com 06-Sep-2008 09:22
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' );
?>
alban dot lopez+php dot net at gmail dot com 16-Nov-2007 03:13
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));
    }
}
?>
flominator at gmx dot net 01-Aug-2007 06:49
@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!
saulius at solmetra dot lt 18-Jun-2007 08:28
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));
}
ponsho 14-Dec-2005 12:44
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;
    }
?>
barbarinasv at interfree dot it 05-Oct-2005 01:02
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;
}
?>
robert at cotran dot ca 21-Sep-2005 12:19
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!
bisqwit at iki dot fi 02-Sep-2005 04:08
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']);
}
?>