zip_open

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

zip_open — 打开ZIP存档文件

说明

resource zip_open ( string $filename )

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

zip_read() - 读取ZIP存档文件中下一项
zip_close() - 关闭一个ZIP档案文件

用户评论:

[#1] fuljencio at gmail dot com [2009-10-13 08:34:22]

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; } ?>

[#2] strefrextor at gmail [.] com [2009-09-13 04:43:31]

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/'); ?>

[#3] david at php dot net [2009-06-20 03:32:29]

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)) { ?>

[#4] Anonymous [2008-09-16 11:17:51]

Note, this function ignores custom stream wrappers, like the ones created by stream_wrapper_register - which is really too bad.

[#5] xsign dot dll at clansuite dot com [2008-09-06 21:22:16]

If you want to simply extract a strain of a zip file, then use this func. Maybe it helps:

<?php 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' ); ?>

[#6] alban dot lopez+php dot net at gmail dot com [2007-11-16 15:13:03]

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.

<?php $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)); } } ?>

[#7] flominator at gmx dot net [2007-08-01 06:49:42]

@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!

[#8] saulius at solmetra dot lt [2007-06-18 08:28:16]

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));
}

[#9] ponsho [2005-12-14 00:44:40]

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; } ?>

[#10] barbarinasv at interfree dot it [2005-10-05 01:02:21]

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; } ?>

[#11] robert at cotran dot ca [2005-09-21 12:19:45]

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!

[#12] bisqwit at iki dot fi [2005-09-02 04:08:21]

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']); } ?>