The ZipArchive class

(PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL zip >= 1.1.0)

Introduction

A file archive, compressed with Zip.

Class synopsis

class ZipArchive implements Countable {

/* Constants */

public const int CREATE;

public const int EXCL;

public const int CHECKCONS;

public const int OVERWRITE;

public const int RDONLY;

public const int FL_NOCASE;

public const int FL_NODIR;

public const int FL_COMPRESSED;

public const int FL_UNCHANGED;

public const int FL_RECOMPRESS;

public const int FL_ENCRYPTED;

public const int FL_OVERWRITE;

public const int FL_LOCAL;

public const int FL_CENTRAL;

public const int FL_ENC_GUESS;

public const int FL_ENC_RAW;

public const int FL_ENC_STRICT;

public const int FL_ENC_UTF_8;

public const int FL_ENC_CP437;

public const int FL_OPEN_FILE_NOW;

public const int CM_DEFAULT;

public const int CM_STORE;

public const int CM_SHRINK;

public const int CM_REDUCE_1;

public const int CM_REDUCE_2;

public const int CM_REDUCE_3;

public const int CM_REDUCE_4;

public const int CM_IMPLODE;

public const int CM_DEFLATE;

public const int CM_DEFLATE64;

public const int CM_PKWARE_IMPLODE;

public const int CM_BZIP2;

public const int CM_LZMA;

public const int CM_LZMA2;

public const int CM_ZSTD;

public const int CM_XZ;

public const int CM_TERSE;

public const int CM_LZ77;

public const int CM_WAVPACK;

public const int CM_PPMD;

public const int ER_OK;

public const int ER_MULTIDISK;

public const int ER_RENAME;

public const int ER_CLOSE;

public const int ER_SEEK;

public const int ER_READ;

public const int ER_WRITE;

public const int ER_CRC;

public const int ER_ZIPCLOSED;

public const int ER_NOENT;

public const int ER_EXISTS;

public const int ER_OPEN;

public const int ER_TMPOPEN;

public const int ER_ZLIB;

public const int ER_MEMORY;

public const int ER_CHANGED;

public const int ER_COMPNOTSUPP;

public const int ER_EOF;

public const int ER_INVAL;

public const int ER_NOZIP;

public const int ER_INTERNAL;

public const int ER_INCONS;

public const int ER_REMOVE;

public const int ER_DELETED;

public const int ER_ENCRNOTSUPP;

public const int ER_RDONLY;

public const int ER_NOPASSWD;

public const int ER_WRONGPASSWD;

public const int ER_OPNOTSUPP;

public const int ER_INUSE;

public const int ER_TELL;

public const int ER_COMPRESSED_DATA;

public const int ER_CANCELLED;

public const int ER_DATA_LENGTH;

public const int ER_NOT_ALLOWED;

public const int ER_TRUNCATED_ZIP;

public const int AFL_RDONLY;

public const int AFL_IS_TORRENTZIP;

public const int AFL_WANT_TORRENTZIP;

public const int AFL_CREATE_OR_KEEP_FILE_FOR_EMPTY_ARCHIVE;

public const int OPSYS_DOS;

public const int OPSYS_AMIGA;

public const int OPSYS_OPENVMS;

public const int OPSYS_UNIX;

public const int OPSYS_VM_CMS;

public const int OPSYS_ATARI_ST;

public const int OPSYS_OS_2;

public const int OPSYS_MACINTOSH;

public const int OPSYS_Z_SYSTEM;

public const int OPSYS_CPM;

public const int OPSYS_WINDOWS_NTFS;

public const int OPSYS_MVS;

public const int OPSYS_VSE;

public const int OPSYS_ACORN_RISC;

public const int OPSYS_VFAT;

public const int OPSYS_ALTERNATE_MVS;

public const int OPSYS_BEOS;

public const int OPSYS_TANDEM;

public const int OPSYS_OS_400;

public const int OPSYS_OS_X;

public const int OPSYS_DEFAULT;

public const int EM_NONE;

public const int EM_TRAD_PKWARE;

public const int EM_AES_128;

public const int EM_AES_192;

public const int EM_AES_256;

public const int EM_UNKNOWN;

public const string LIBZIP_VERSION;

public const int LENGTH_TO_END;

public const int LENGTH_UNCHECKED;

/* Properties */

public readonly int $lastId;

public readonly int $status;

public readonly int $statusSys;

public readonly int $numFiles;

public readonly string $filename;

public readonly string $comment;

/* Methods */

public addEmptyDir(string $dirname, int $flags = 0): bool

public addFile(
    string $filepath,
    string $entryname = "",
    int $start = 0,
    int $length = ZipArchive::LENGTH_TO_END,
    int $flags = ZipArchive::FL_OVERWRITE
): bool

public addFromString(string $name, string $content, int $flags = ZipArchive::FL_OVERWRITE): bool

public addGlob(string $pattern, int $flags = 0, array $options = []): array|false

public addPattern(string $pattern, string $path = ".", array $options = []): array|false

public clearError(): void

public close(): bool

public count(): int

public deleteIndex(int $index): bool

public deleteName(string $name): bool

public extractTo(string $pathto, array|string|null $files = null): bool

public getArchiveComment(int $flags = 0): string|false

public getArchiveFlag(int $flag, int $flags = 0): int

public getCommentIndex(int $index, int $flags = 0): string|false

public getCommentName(string $name, int $flags = 0): string|false

public getExternalAttributesIndex(
    int $index,
    int &$opsys,
    int &$attr,
    int $flags = 0
): bool

public getExternalAttributesName(
    string $name,
    int &$opsys,
    int &$attr,
    int $flags = 0
): bool

public getFromIndex(int $index, int $len = 0, int $flags = 0): string|false

public getFromName(string $name, int $len = 0, int $flags = 0): string|false

public getNameIndex(int $index, int $flags = 0): string|false

public getStatusString(): string

public getStream(string $name): resource|false

public getStreamIndex(int $index, int $flags = 0): resource|false

public getStreamName(string $name, int $flags = 0): resource|false

public static isCompressionMethodSupported(int $method, bool $enc = true): bool

public static isEncryptionMethodSupported(int $method, bool $enc = true): bool

public locateName(string $name, int $flags = 0): int|false

public open(string $filename, int $flags = 0): bool|int

public registerCancelCallback(callable $callback): bool

public registerProgressCallback(float $rate, callable $callback): bool

public renameIndex(int $index, string $new_name): bool

public renameName(string $name, string $new_name): bool

public replaceFile(
    string $filepath,
    int $index,
    int $start = 0,
    int $length = ZipArchive::LENGTH_TO_END,
    int $flags = 0
): bool

public setArchiveComment(string $comment): bool

public setArchiveFlag(int $flag, int $value): bool

public setCommentIndex(int $index, string $comment): bool

public setCommentName(string $name, string $comment): bool

public setCompressionIndex(int $index, int $method, int $compflags = 0): bool

public setCompressionName(string $name, int $method, int $compflags = 0): bool

public setEncryptionIndex(int $index, int $method, #[\SensitiveParameter] ?string $password = null): bool

public setEncryptionName(string $name, int $method, #[\SensitiveParameter] ?string $password = null): bool

public setExternalAttributesIndex(
    int $index,
    int $opsys,
    int $attr,
    int $flags = 0
): bool

public setExternalAttributesName(
    string $name,
    int $opsys,
    int $attr,
    int $flags = 0
): bool

public setMtimeIndex(int $index, int $timestamp, int $flags = 0): bool

public setMtimeName(string $name, int $timestamp, int $flags = 0): bool

public setPassword(#[\SensitiveParameter] string $password): bool

public statIndex(int $index, int $flags = 0): array|false

public statName(string $name, int $flags = 0): array|false

public unchangeAll(): bool

public unchangeArchive(): bool

public unchangeIndex(int $index): bool

public unchangeName(string $name): bool

}

Properties

lastId: Index value of last added entry (file or directory). Available as of PHP 8.0.0 and PECL zip 1.18.0.
status: Status of the Zip Archive. Available for closed archive, as of PHP 8.0.0 and PECL zip 1.18.0.
statusSys: System status of the Zip Archive. Available for closed archive, as of PHP 8.0.0 and PECL zip 1.18.0.
numFiles: Number of files in archive
filename: File name in the file system
comment: Comment for the archive

ZipArchive::addEmptyDir — Add a new directory
ZipArchive::addFile — Adds a file to a ZIP archive from the given path
ZipArchive::addFromString — Add a file to a ZIP archive using its contents
ZipArchive::addGlob — Add files from a directory by glob pattern
ZipArchive::addPattern — Add files from a directory by PCRE pattern
ZipArchive::clearError — Clear the status error message, system and/or zip messages
ZipArchive::close — Close the active archive (opened or newly created)
ZipArchive::count — Counts the number of files in the archive
ZipArchive::deleteIndex — Delete an entry in the archive using its index
ZipArchive::deleteName — Delete an entry in the archive using its name
ZipArchive::extractTo — Extract the archive contents
ZipArchive::getArchiveComment — Returns the Zip archive comment
ZipArchive::getArchiveFlag — Returns the value of a Zip archive global flag
ZipArchive::getCommentIndex — Returns the comment of an entry using the entry index
ZipArchive::getCommentName — Returns the comment of an entry using the entry name
ZipArchive::getExternalAttributesIndex — Retrieve the external attributes of an entry defined by its index
ZipArchive::getExternalAttributesName — Retrieve the external attributes of an entry defined by its name
ZipArchive::getFromIndex — Returns the entry contents using its index
ZipArchive::getFromName — Returns the entry contents using its name
ZipArchive::getNameIndex — Returns the name of an entry using its index
ZipArchive::getStatusString — Returns the status error message, system and/or zip messages
ZipArchive::getStream — Get a file handler to the entry defined by its name (read only)
ZipArchive::getStreamIndex — Get a file handler to the entry defined by its index (read only)
ZipArchive::getStreamName — Get a file handler to the entry defined by its name (read only)
ZipArchive::isCompressionMethodSupported — Check if a compression method is supported by libzip
ZipArchive::isEncryptionMethodSupported — Check if a encryption method is supported by libzip
ZipArchive::locateName — Returns the index of the entry in the archive
ZipArchive::open — Open a ZIP file archive
ZipArchive::registerCancelCallback — Register a callback to allow cancellation during archive close.
ZipArchive::registerProgressCallback — Register a callback to provide updates during archive close.
ZipArchive::renameIndex — Renames an entry defined by its index
ZipArchive::renameName — Renames an entry defined by its name
ZipArchive::replaceFile — Replace file in ZIP archive with a given path
ZipArchive::setArchiveComment — Set the comment of a ZIP archive
ZipArchive::setArchiveFlag — Set a global flag of a ZIP archive
ZipArchive::setCommentIndex — Set the comment of an entry defined by its index
ZipArchive::setCommentName — Set the comment of an entry defined by its name
ZipArchive::setCompressionIndex — Set the compression method of an entry defined by its index
ZipArchive::setCompressionName — Set the compression method of an entry defined by its name
ZipArchive::setEncryptionIndex — Set the encryption method of an entry defined by its index
ZipArchive::setEncryptionName — Set the encryption method of an entry defined by its name
ZipArchive::setExternalAttributesIndex — Set the external attributes of an entry defined by its index
ZipArchive::setExternalAttributesName — Set the external attributes of an entry defined by its name
ZipArchive::setMtimeIndex — Set the modification time of an entry defined by its index
ZipArchive::setMtimeName — Set the modification time of an entry defined by its name
ZipArchive::setPassword — Set the password for the active archive
ZipArchive::statIndex — Get the details of an entry defined by its index
ZipArchive::statName — Get the details of an entry defined by its name
ZipArchive::unchangeAll — Undo all changes done in the archive
ZipArchive::unchangeArchive — Revert all global changes done in the archive
ZipArchive::unchangeIndex — Revert all changes done to an entry at the given index
ZipArchive::unchangeName — Revert all changes done to an entry with the given name

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User Contributed Notes 15 notes

down

umbalaconmeogia at NOSPAM dot gmail dot com ¶

12 years ago

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();
  }
}
?>

down

ohcc at 163 dot com ¶

9 years ago

With PHP 5.6+, you may come up with theses errors.Warning: Unknown: Cannot destroy the zip context in Unknown on line 0Warning: ZipArchive::close(): Can't remove file: No such file or directory in xxxx.php on line xxExamplesWarning: 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();?>

down

theking2(at)king.ma ¶

2 years ago

A modern way to zip a folder recursivly is using the DirectoryIterator. I use this little class:<?phpclass MakeZip{  private ZipArchive $zipArchive;  private int $startPathLength; // chars to remove from the start for the stored entity  public function __construct(    string $zipArchivename,    public readonly string $startPath,    public readonly mixed $convert_function,  )  {    $this->zipArchive = new \ZipArchive;    $this->zipArchive->open($zipArchivename, ZipArchive::CREATE);    $this->startPathLength = strlen($this-> startPath);    $this-> zipDir($startPath);  }  public function __destruct()  {    $this-> zipArchive-> close();  }  /**   * Add files and sub-directories in a folder to zip file.   * @param string $folder   * @param ZipArchive $zipFile   * @param int $exclusiveLength Number of text to be exclusived from the file path.   */  private function zipDir($folder)  {    echo $folder . '<br>' . PHP_EOL;    foreach (new \DirectoryIterator($folder) as $f) {      if ($f->isDot())        continue; //skip . ..      if ($f->isDir()) {        if( $f->getExtension() === 'git') continue; // skip .git folder        $this-> zipArchive-> addEmptyDir($f->getPathname());        $this-> zipDir($f->getPathname());        continue;      }      if ($f->isFile()) {        if ($f->getBasename() === basename(__FILE__)) continue; // skip self         if ($f->getExtension() === 'zip') continue; // skip ZIP files        $this-> zipArchive ->addFile( substr($f-> getPathname(), $this-> startPathLength) ); // remove './'        continue;      }    }  }}?>Which can be used thusly:<?php  $host = str_replace('.', '_', $_SERVER['HTTP_HOST']);  $date = date('Ymd-His');  $zip = new \MakeZip("./archiv-$host-$date.zip", './', $convert_function);  unset($zip);?>Add encryption or other features in the constructor.

down

AshleyDambra at live dot com ¶

12 years ago

Simple class xZip to zip big folders into multiple parts and unzip multi zip files at once.<?phpclass 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/");?>

down

ebestwebmaster at gmail dot com ¶

10 years ago

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);?>

down

Jerry dot Saravia at emc dot com ¶

14 years ago

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 );
}
?>

down

bruno dot vibert at bonobox dot fr ¶

13 years ago

There is a usefull function to get the ZipArchive status as a human readable string :<?phpfunction 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 );    }}?>

down

webmaster at sebastiangrinke dot info ¶

13 years ago

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);}
    }
?>

down

nick at fullfatthings dot com ¶

10 years ago

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.

down

hardcorevenom at gmx dot com ¶

15 years ago

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.

down

niklas dot schumi at NOSPAM dot googlemail dot com ¶

13 years ago

Hi there.I just wrote a little function to zip a whole folder while maintaining the dir-structure. I hope it might help someone.<?phpfunction 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!

down

panique at web dot de ¶

13 years ago

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.

down

ohcc at 163 dot com ¶

9 years ago

<?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'));?>

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-2

piotr dot stop dot spam at gmail dot com ¶

11 years ago

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;}

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-3

h-fate at gmx dot net ¶

14 years ago

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.

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The ZipArchive class

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