zip_open

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

zip_openOpen a ZIP file archive

Descrierea

resource zip_open ( string $filename )

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 the number of error if filename does not exist or in case of other error.

Vedeți de asemenea

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User Contributed Notes 12 notes

up
5
david at php dot net
5 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
1
Anonymous
6 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
9 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
0
fuljencio at gmail dot com
5 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
0
strefrextor at gmail [.] com
5 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/');
?>
up
0
flominator at gmx dot net
7 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
0
saulius at solmetra dot lt
7 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
0
ponsho
9 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
barbarinasv at interfree dot it
9 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
0
bisqwit at iki dot fi
9 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
-2
xsign dot dll at clansuite dot com
6 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
-1
alban dot lopez+php dot net at gmail dot com
7 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));
    }
}
?>
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