ZipArchive

(PHP 5 >= 5.2.0, PHP 7, PECL zip >= 1.1.0)

简介

一个用 Zip 压缩的文件存档。

类摘要

ZipArchive {
/* 属性 */
/* 方法 */
addEmptyDir ( string $dirname ) : bool
addFile ( string $filename [, string $localname = NULL [, int $start = 0 [, int $length = 0 ]]] ) : bool
addFromString ( string $localname , string $contents ) : bool
addGlob ( string $pattern [, int $flags = 0 [, array $options = array() ]] ) : bool
addPattern ( string $pattern [, string $path = "." [, array $options = array() ]] ) : bool
close ( void ) : bool
public count ( void ) : int
deleteIndex ( int $index ) : bool
deleteName ( string $name ) : bool
extractTo ( string $destination [, mixed $entries ] ) : bool
getArchiveComment ([ int $flags ] ) : string
getCommentIndex ( int $index [, int $flags ] ) : string
getCommentName ( string $name [, int $flags ] ) : string
GetExternalAttributesIndex ( int $index , int &$opsys , int &$attr [, int $flags ] ) : bool
getExternalAttributesName ( string $name , int &$opsys , int &$attr [, int $flags ] ) : bool
getFromIndex ( int $index [, int $length = 0 [, int $flags ]] ) : string
getFromName ( string $name [, int $length = 0 [, int $flags ]] ) : string
getNameIndex ( int $index [, int $flags ] ) : string
getStatusString ( void ) : string
getStream ( string $name ) : resource
locateName ( string $name [, int $flags ] ) : int
open ( string $filename [, int $flags ] ) : mixed
renameIndex ( int $index , string $newname ) : bool
renameName ( string $name , string $newname ) : bool
setArchiveComment ( string $comment ) : bool
setCommentIndex ( int $index , string $comment ) : bool
setCommentName ( string $name , string $comment ) : bool
setCompressionIndex ( int $index , int $comp_method [, int $comp_flags = 0 ] ) : bool
setCompressionName ( string $name , int $comp_method [, int $comp_flags = 0 ] ) : bool
setEncryptionIndex ( int $index , string $method [, string $password ] ) : bool
setEncryptionName ( string $name , int $method [, string $password ] ) : bool
setExternalAttributesIndex ( int $index , int $opsys , int $attr [, int $flags ] ) : bool
setExternalAttributesName ( string $name , int $opsys , int $attr [, int $flags ] ) : bool
public setPassword ( string $password ) : bool
statIndex ( int $index [, int $flags ] ) : array
statName ( string $name [, int $flags ] ) : array
unchangeAll ( void ) : bool
unchangeArchive ( void ) : bool
unchangeIndex ( int $index ) : bool
unchangeName ( string $name ) : bool
}

属性

status

Zip Archive 的状态

statusSys

Zip Archive 的系统状态

numFiles

压缩包里的文件数

filename

在文件系统里的文件名

comment

压缩包的注释

Table of Contents

User Contributed Notes

M. Wolf 17-Aug-2016 05:39
How to detect corrupt files with CRC mismatch:

Creating a corrupt archive for testing is simple - zip some files and change a byte with a hex editor in the resulting ZIP file. Now you can test the file with a ZIP application to learn which file inside the archive is corrupt.

ZipArchive seems unable to detect broken files. ZipArchive::CHECKCONS doesn't help, only if it's not a ZIP file at all. It happily decompressed corrupt files in my tests and the user downloading the data is not informed.

You can simply verify on the server for smaller files:
<?php
$maxsize
= 1024*1024;
$z = new ZipArchive;
$r = $z->open("foo.zip", ZipArchive::CHECKCONS);
if(
$r !== TRUE)
  die(
'ZIP error when trying to open "foo.zip": '.$r);

$stat = $z->statName("mybrokenfile.txt");
if(
$stat['size'] > $maxsize)
  die(
'File too large, decompression denied');
$s = $z->getStream($file);
$data = stream_get_contents($s, $maxsize);
fclose($s);
if(
$stat['crc'] != crc32($data))
  die(
'File is corrupt!');
//echo 'File is valid';

//you may send the file to the client now if you didn't output anything before
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="mybrokenfile.txt"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . $stat['size']);
ob_clean();
echo
$data;
$z->close();
?>

If the file shall not be fully decompressed on the server but decompressed while streaming to the client due to it's size, the file transfer already startet and printing an error message later doesn't work. Maybe the best way would be to interrupt the connection before closing the file transfer. The client should be able to detect this as corrupt download.
On the server side a function is needed, that can calculate the CRC32 on streamed data stepwise.
ohcc at 163 dot com 28-Nov-2015 06:14
With PHP 5.6+, you may come up with theses errors.

Warning: Unknown: Cannot destroy the zip context in Unknown on line 0

Warning: ZipArchive::close(): Can't remove file: No such file or directory in xxxx.php on line xx

Examples

Warning: Unknown: Cannot destroy the zip context in Unknown on line 0

<?php        
    $za
= new ZipArchive;
   
$za->open('51-n.com.zip',ZipArchive::CREATE|ZipArchive::OVERWRITE);
?>

Warning: ZipArchive::close(): Can't remove file: No such file or directory in xxxx.php on line xx

<?php        
    $za
= new ZipArchive;
   
$za->open('51-n.com.zip',ZipArchive::CREATE|ZipArchive::OVERWRITE);
   
$za->close();
?>

It happens when the zip archive is empty.
Your zip archive will not be saved on disk unless it has at least one file. What's more, when ZipArchive::OVERWRITE is applied, if there exists a file with the same name, it will be removed after ZipArchive::open() is called.

So, don't forget to put at least one file to your zip archive.

<?php        
    $za
= new ZipArchive;
   
$za->open('51-n.com.zip',ZipArchive::CREATE|ZipArchive::OVERWRITE);
   
$za->addFromString('wuxiancheng.cn.txt','yes');
   
$za->close();
?>
ohcc at 163 dot com 06-Nov-2015 08:58
<?php
   
//use bzip2 + ZipArchive to reduce file size of your zip archives.
   
$zip = new ZipArchive;
   
$zip->open('i.zip',ZIPARCHIVE::CREATE|ZIPARCHIVE::OVERWRITE);
   
$file='wuxiancheng.cn.sql';
   
$bzFilename = $file.'.bz2';
   
$sql = file_get_contents($file);
   
$sql = bzcompress($sql,9);
   
$zip->addFromString($bzFilename,$sql);
   
$zip->setArchiveComment('zipped on '.date('Y-M-d'));
?>
nick at fullfatthings dot com 24-Mar-2015 02:59
There is a limit withing PHP 5.3.3 (which seems to have been addressed in later versions; 5.3.29 seems ok on a different server).

If you try to open a zip file with more than 65,535 files in it (in my case it had 237,942 files) then you cannot access the later files. The numFiles property only reports the first 65k files.
ebestwebmaster at gmail dot com 16-Dec-2014 11:46
A way of zipping files and downloading them thereafter:
<?php

 $files
= array('image.jpeg','text.txt','music.wav');
$zipname = 'enter_any_name_for_the_zipped_file.zip';
$zip = new ZipArchive;
$zip->open($zipname, ZipArchive::CREATE);
foreach (
$files as $file) {
 
$zip->addFile($file);
}
$zip->close();

///Then download the zipped file.
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.$zipname);
header('Content-Length: ' . filesize($zipname));
readfile($zipname);

?>
piotr dot stop dot spam at gmail dot com 17-Jan-2014 04:58
You can check general purpose flag to test if the zip file is encrypted. Example function below.

<?php

/**
 * Check if the file is encrypted
 *
 * Notice: if file doesn't exists or cannot be opened, function
 * also return false.
 *
 * @param string $pathToArchive
 * @return boolean return true if file is encrypted
 */
function isEncryptedZip( $pathToArchive ) {
   
$fp = @fopen( $pathToArchive, 'r' );
   
$encrypted = false;
    if (
$fp && fseek( $fp, 6 ) == 0 ) {
       
$string = fread( $fp, 2 );
        if (
false !== $string ) {
           
$data = unpack("vgeneral", $string);
           
$encrypted = $data[ 'general' ] & 0x01 ? true : false;
        }
       
fclose( $fp );
    }
    return
$encrypted;
}
AshleyDambra at live dot com 16-May-2013 08:23
Simple class xZip to zip big folders into multiple parts and unzip multi zip files at once.

<?php
class xZip {
    public function
__construct() {}
    private function
_rglobRead($source, &$array = array()) {
        if (!
$source || trim($source) == "") {
           
$source = ".";
        }
        foreach ((array)
glob($source . "/*/") as $key => $value) {
           
$this->_rglobRead(str_replace("//", "/", $value), $array);
        }
   
        foreach ((array)
glob($source . "*.*") as $key => $value) {
           
$array[] = str_replace("//", "/", $value);
        }
    }
    private function
_zip($array, $part, $destination) {
       
$zip = new ZipArchive;
        @
mkdir($destination, 0777, true);
   
        if (
$zip->open(str_replace("//", "/", "{$destination}/partz{$part}.zip"), ZipArchive::CREATE)) {
            foreach ((array)
$array as $key => $value) {
               
$zip->addFile($value, str_replace(array("../", "./"), NULL, $value));
            }
           
$zip->close();
        }
    }
    public function
zip($limit = 500, $source = NULL, $destination = "./") {
        if (!
$destination || trim($destination) == "") {
           
$destination = "./";
        }
   
       
$this->_rglobRead($source, $input);
       
$maxinput = count($input);
       
$splitinto = (($maxinput / $limit) > round($maxinput / $limit, 0)) ? round($maxinput / $limit, 0) + 1 : round($maxinput / $limit, 0);
   
        for(
$i = 0; $i < $splitinto; $i ++) {
           
$this->_zip(array_slice($input, ($i * $limit), $limit, true), $i, $destination);
        }
       
        unset(
$input);
        return;
    }
    public function
unzip($source, $destination) {
        @
mkdir($destination, 0777, true);
   
        foreach ((array)
glob($source . "/*.zip") as $key => $value) {
           
$zip = new ZipArchive;
            if (
$zip->open(str_replace("//", "/", $value)) === true) {
               
$zip->extractTo($destination);
               
$zip->close();
            }
        }
    }
   
    public function
__destruct() {}
}

//$zip = new xZip;
//$zip->zip(500, "images/", "images_zip/");
//$zip->unzip("images_zip/", "images/");
?>
umbalaconmeogia at NOSPAM dot gmail dot com 28-Nov-2012 03:48
Zip a folder (include itself).
Usage:
  HZip::zipDir('/path/to/sourceDir', '/path/to/out.zip');

<?php
class HZip
{
 
/**
   * Add files and sub-directories in a folder to zip file.
   * @param string $folder
   * @param ZipArchive $zipFile
   * @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)) {
      if (
$f != '.' && $f != '..') {
       
$filePath = "$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 (include itself).
   * Usage:
   *   HZip::zipDir('/path/to/sourceDir', '/path/to/out.zip');
   *
   * @param string $sourcePath Path of directory to be zip.
   * @param string $outZipPath Path of 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);
   
self::folderToZip($sourcePath, $z, strlen("$parentPath/"));
   
$z->close();
  }
}
?>
niklas dot schumi at NOSPAM dot googlemail dot com 02-Aug-2012 10:44
Hi there.
I just wrote a little function to zip a whole folder while maintaining the dir-structure. I hope it might help someone.

<?php
function folderToZip($folder, &$zipFile, $subfolder = null) {
    if (
$zipFile == null) {
       
// no resource given, exit
       
return false;
    }
   
// we check if $folder has a slash at its end, if not, we append one
   
$folder .= end(str_split($folder)) == "/" ? "" : "/";
   
$subfolder .= end(str_split($subfolder)) == "/" ? "" : "/";
   
// we start by going through all files in $folder
   
$handle = opendir($folder);
    while (
$f = readdir($handle)) {
        if (
$f != "." && $f != "..") {
            if (
is_file($folder . $f)) {
               
// if we find a file, store it
                // if we have a subfolder, store it there
               
if ($subfolder != null)
                   
$zipFile->addFile($folder . $f, $subfolder . $f);
                else
                   
$zipFile->addFile($folder . $f);
            } elseif (
is_dir($folder . $f)) {
               
// if we find a folder, create a folder in the zip
               
$zipFile->addEmptyDir($f);
               
// and call the function again
               
folderToZip($folder . $f, $zipFile, $f);
            }
        }
    }
}
?>

Use it like this:
<?php
$z
= new ZipArchive();
$z->open("test.zip", ZIPARCHIVE::CREATE);
folderToZip("storeThisFolder", $z);
$z->close();
?>

Have a good day!
panique at web dot de 14-Jul-2012 11:21
Important: Due to the natural file size limit of 4GB (~3,6GB to be correct) of zip files, this class will generate corrupt files of the result is larger than 4 GB. Using tar.gz is a proper alternative.
bruno dot vibert at bonobox dot fr 09-May-2012 08:21
There is a usefull function to get the ZipArchive status as a human readable string :

<?php
function ZipStatusString( $status )
{
    switch( (int)
$status )
    {
        case
ZipArchive::ER_OK           : return 'N No error';
        case
ZipArchive::ER_MULTIDISK    : return 'N Multi-disk zip archives not supported';
        case
ZipArchive::ER_RENAME       : return 'S Renaming temporary file failed';
        case
ZipArchive::ER_CLOSE        : return 'S Closing zip archive failed';
        case
ZipArchive::ER_SEEK         : return 'S Seek error';
        case
ZipArchive::ER_READ         : return 'S Read error';
        case
ZipArchive::ER_WRITE        : return 'S Write error';
        case
ZipArchive::ER_CRC          : return 'N CRC error';
        case
ZipArchive::ER_ZIPCLOSED    : return 'N Containing zip archive was closed';
        case
ZipArchive::ER_NOENT        : return 'N No such file';
        case
ZipArchive::ER_EXISTS       : return 'N File already exists';
        case
ZipArchive::ER_OPEN         : return 'S Can\'t open file';
        case
ZipArchive::ER_TMPOPEN      : return 'S Failure to create temporary file';
        case
ZipArchive::ER_ZLIB         : return 'Z Zlib error';
        case
ZipArchive::ER_MEMORY       : return 'N Malloc failure';
        case
ZipArchive::ER_CHANGED      : return 'N Entry has been changed';
        case
ZipArchive::ER_COMPNOTSUPP  : return 'N Compression method not supported';
        case
ZipArchive::ER_EOF          : return 'N Premature EOF';
        case
ZipArchive::ER_INVAL        : return 'N Invalid argument';
        case
ZipArchive::ER_NOZIP        : return 'N Not a zip archive';
        case
ZipArchive::ER_INTERNAL     : return 'N Internal error';
        case
ZipArchive::ER_INCONS       : return 'N Zip archive inconsistent';
        case
ZipArchive::ER_REMOVE       : return 'S Can\'t remove file';
        case
ZipArchive::ER_DELETED      : return 'N Entry has been deleted';
       
        default: return
sprintf('Unknown status %s', $status );
    }
}

?>
webmaster at sebastiangrinke dot info 06-Oct-2011 01:30
Here is a simple function which zips folders with all sub folders or only a simple file... the $data var can be a string or an array...

<?php
public function un_zip($data,$arcpf,$mode='zip',$obj=''){
       
$absoluterpfad = 'YOUR_BASE_PATH';
       
$arcpf = $absoluterpfad.DS.$arcpf;
        if(
is_object($obj)==false){
            
$archiv = new ZipArchive();
            
$archiv->open($arcpf,ZipArchive::CREATE);
        }else{
$archiv =& $obj;}
        if(
$mode=='zip'){
           if(
is_array($data)==true){
                 foreach(
$data as $dtmp){
                    
$archiv =& un_zip($dtmp,$arcpf,'zip',&$archiv);
                 }
           }else{
            if(
is_dir($data)==true){
                   
$archiv->addEmptyDir(str_replace($absoluterpfad.DS,'',$data));
                 
$files = scandir($data);
              
$bad = array('.','..');
              
$files = array_diff($files,$bad);
               foreach(
$files as $ftmp){
                   if(
is_dir($data.DS.$ftmp)==true){
                       
$archiv->addEmptyDir(str_replace($absoluterpfad.DS,'',$data.'/'.$ftmp));
                       
$archiv =& un_zip($data.DS.$ftmp,$arcpf,'zip',&$archiv);
                   }elseif(
is_file($data.DS.$ftmp)==true){
                   
$archiv->addFile($data.DS.$ftmp,str_replace($absoluterpfad.DS,'',$data.'/'.$ftmp));
                   }
                 }
            }elseif(
is_file($data)==true){$archiv->addFile($data,str_replace($absoluterpfad.DS,'',$data));}
           }
        }
        if(
is_object($obj)==false){$archiv->close();}
        else{return
$archiv;}
        if(
$mode=='unzip'){$archiv->extractTo($data);}
    }
?>
Jerry dot Saravia at emc dot com 08-Aug-2011 01:57
The following code can be used to get a list of all the file names in a zip file.

<?php
$za
= new ZipArchive();

$za->open('theZip.zip');

for(
$i = 0; $i < $za->numFiles; $i++ ){
   
$stat = $za->statIndex( $i );
   
print_r( basename( $stat['name'] ) . PHP_EOL );
}
?>
h-fate at gmx dot net 05-Oct-2010 04:17
Be wary that there are several algorithms to generate a zip file. I found that Office OpenXML files created with ZipArchive are not recognized by Excel 2007, for example.

You have to use a different class to zip in this case, such as PclZip.
hardcorevenom at gmx dot com 15-Jun-2010 03:17
Read a file from an archive to a variable.
A warning is printed automatically in case of a CRC32 mismatch, which we capture, so we can print our own error message.

<?php
$zip
= new ZipArchive();
if (
$zip->open('archive.zip')) {
 
$fp = $zip->getStream('myfile.txt'); //file inside archive
 
if(!$fp)
    die(
"Error: can't get stream to zipped file");
 
$stat = $zip->statName('myfile.txt');

 
$buf = ""; //file buffer
 
ob_start(); //to capture CRC error message
   
while (!feof($fp)) {
     
$buf .= fread($fp, 2048); //reading more than 2156 bytes seems to disable internal CRC32 verification (bug?)
   
}
   
$s = ob_get_contents();
 
ob_end_clean();
  if(
stripos($s, "CRC error") != FALSE){
    echo
'CRC32 mismatch, current ';
   
printf("%08X", crc32($buf)); //current CRC
   
echo ', expected ';
   
printf("%08X", $stat['crc']); //expected CRC
 
}

 
fclose($fp);
 
$zip->close();
 
//Done, unpacked file is stored in $buf
}
?>

To create a corrupt file, change a byte in a zip file using a hex editor.