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# CLXXXIII. Zip File Functions

# Введение

This module enables you to transparently read or write ZIP compressed archives and the files inside them.

# Требования

## PHP 4 Bundled

The initial version is bundled in PHP 4 and is available in PECL as version 1.0, see http://pecl.php.net/package/zip. It can only read Zip Archives.

This version uses the functions of the ZZIPlib library by Guido Draheim. You need ZZIPlib version >= 0.10.6.

## PECL and PHP 5.2 or later

The newest version is bundled in PHP 5.2.0 or later and available in PECL, as version 1.1.0 or later. It does not require any external library. It can read and write Zip archives when used with PHP 5.1 or later and can only read them when used with PHP4.

# Установка

Это расширение PECL не поставляется вместе с PHP. Дополнительная информация, такая как новый версии, скачивание, исходные файлы, информация о разработчике и CHANGELOG, могут быть найдены здесь: http://pecl.php.net/package/zip.

## Installation on Linux

### Installation when bundled with PHP4

In order to use these functions you must compile PHP with zip support by using the `--with-zip[=DIR]` configure option, where [DIR] is the prefix of the ZZIPlib library install.

### Installation with PECL or bundled with PHP 5.2 or later

In order to use these functions you must compile PHP with zip support by using the `--enable-zip` configure option. It does not require any external library.

> Замечание: You can use the PECL version with PHP4. In order to do it you have to disable the bundled Zip extension or recompile PHP without it.

## Installation on Windows

### Installation when bundled with PHP4

Windows users will enable `php_zip.dll` inside of `php.ini` in order to use these functions. В PHP 4 этот DLL находится в директории `extensions/` внутри директории бинарного дистрибутива PHP для Windows. Вы можете скачать DLL этого расширения PECL со страницы PHP Downloads или http://snaps.php.net/.

> Замечание: Zip support before PHP 4.1.0 is experimental. This section reflects the Zip extension as it exists in PHP 4.1.0 and later.

### Installation with PECL or bundled with PHP 5.2 or later

Windows users will enable `php_zip.dll` inside of `php.ini` in order to use these functions. В PHP 4 этот DLL находится в директории `extensions/` внутри директории бинарного дистрибутива PHP для Windows. Вы можете скачать DLL этого расширения PECL со страницы PHP Downloads или http://snaps.php.net/.

# Настройка во время выполнения

Данное расширение не определяет никакие директивы конфигурации в `php.ini`.

# Типы ресурсов

There are two resource types used in the Zip module. The first one is the Zip directory for the Zip archive, the second Zip Entry for the archive entries.

# Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение подгружается во время выполнения.

ZipArchive uses class constants. There is three types of constants, Flags (FL_) errors (ER_) or mode (no prefix).

`ZIPARCHIVE::CREATE` (integer)

  Create the archive if it does not exist.

`ZIPARCHIVE::OVERWRITE` (integer)

  Always start a new archive, this mode will overwrite the file if it already exists.

`ZIPARCHIVE::EXCL` (integer)

  Error if archive already exists.

`ZIPARCHIVE::CHECKCONS` (integer)

  Perform additional consistency checks on the archive, and error if they fail.

`ZIPARCHIVE::FL_NOCASE` (integer)

  Ignore case on name lookup

`ZIPARCHIVE::FL_NODIR` (integer)

  Ignore directory component

`ZIPARCHIVE::FL_COMPRESSED` (integer)

  Read compressed data

`ZIPARCHIVE::FL_UNCHANGED` (integer)

  Use original data, ignoring changes.

`ZIPARCHIVE::CM_DEFAULT` (integer)

  better of deflate or store.

`ZIPARCHIVE::CM_STORE` (integer)

  stored (uncompressed).

`ZIPARCHIVE::CM_SHRINK` (integer)

  shrunk

`ZIPARCHIVE::CM_REDUCE_1` (integer)

  reduced with factor 1

`ZIPARCHIVE::CM_REDUCE_2` (integer)

  reduced with factor 2

`ZIPARCHIVE::CM_REDUCE_3` (integer)

  reduced with factor 3

`ZIPARCHIVE::CM_REDUCE_4` (integer)

  reduced with factor 4

`ZIPARCHIVE::CM_IMPLODE` (integer)

  imploded

`ZIPARCHIVE::CM_DEFLATE` (integer)

  deflated

`ZIPARCHIVE::CM_DEFLATE64` (integer)

  deflate64

`ZIPARCHIVE::CM_PKWARE_IMPLODE` (integer)

  PKWARE imploding

`ZIPARCHIVE::CM_BZIP2` (integer)

  BZIP2 algorithm

`ZIPARCHIVE::ER_OK` (integer)

  No error.

`ZIPARCHIVE::ER_MULTIDISK` (integer)

  Multi-disk zip archives not supported.

`ZIPARCHIVE::ER_RENAME` (integer)

  Renaming temporary file failed.

`ZIPARCHIVE::ER_CLOSE` (integer)

  Closing zip archive failed

`ZIPARCHIVE::ER_SEEK` (integer)

  Seek error

`ZIPARCHIVE::ER_READ` (integer)

  Read error

`ZIPARCHIVE::ER_WRITE` (integer)

  Write error

`ZIPARCHIVE::ER_CRC` (integer)

  CRC error

`ZIPARCHIVE::ER_ZIPCLOSED` (integer)

  Containing zip archive was closed

`ZIPARCHIVE::ER_NOENT` (integer)

  No such file.

`ZIPARCHIVE::ER_EXISTS` (integer)

  File already exists

`ZIPARCHIVE::ER_OPEN` (integer)

  Can't open file

`ZIPARCHIVE::ER_TMPOPEN` (integer)

  Failure to create temporary file.

`ZIPARCHIVE::ER_ZLIB` (integer)

  Zlib error

`ZIPARCHIVE::ER_MEMORY` (integer)

  Memory allocation failure

`ZIPARCHIVE::ER_CHANGED` (string)

  Entry has been changed

`ZIPARCHIVE::ER_COMPNOTSUPP` (integer)

  Compression method not supported.

`ZIPARCHIVE::ER_EOF` (integer)

  Premature EOF

`ZIPARCHIVE::ER_INVAL` (integer)

  Invalid argument

`ZIPARCHIVE::ER_NOZIP` (integer)

  Not a zip archive

`ZIPARCHIVE::ER_INTERNAL` (integer)

  Internal error

`ZIPARCHIVE::ER_INCONS` (integer)

  Zip archive inconsistent

`ZIPARCHIVE::ER_REMOVE` (integer)

  Can't remove file

`ZIPARCHIVE::ER_DELETED` (integer)

  Entry has been deleted

# Примеры

Пример 1. Create a Zip archive

`<?php
$zip = new ZipArchive();
$filename = "./test112.zip";
if ($zip->open($filename, ZIPARCHIVE::CREATE)!==TRUE) {
exit("cannot open <$filename>\n");
}
$zip->addFromString("testfilephp.txt" . time(), "#1 This is a test string added as testfilephp.txt.\n");
$zip->addFromString("testfilephp2.txt" . time(), "#2 This is a test string added as testfilephp2.txt.\n");
$zip->addFile($thisdir . "/too.php","/testfromfile.php");
echo "numfiles: " . $zip->numFiles . "\n";
echo "status:" . $zip->status . "\n";
$zip->close();
?>`

Пример 2. Dump the archive details and listing

`<?php
$za = new ZipArchive();
$za->open('test_with_comment.zip');
print_r($za);
var_dump($za);
echo "numFiles: " . $za->numFiles . "\n";
echo "status: " . $za->status . "\n";
echo "statusSys: " . $za->statusSys . "\n";
echo "filename: " . $za->filename . "\n";
echo "comment: " . $za->comment . "\n";
for ($i=0; $i<$za->numFiles;$i++) {
echo "index: $i\n";
print_r($za->statIndex($i));
}
echo "numFile:" . $za->numFiles . "\n";
?>`

Пример 3. Zip stream wrapper, read an OpenOffice meta info

`<?php
$reader = new XMLReader();
$reader->open('zip://' . dirname(__FILE__) . '/test.odt#meta.xml');
$odt_meta = array();
while ($reader->read()) {
if ($reader->nodeType == XMLREADER::ELEMENT) {
$elm = $reader->name;
} else {
if ($reader->nodeType == XMLREADER::END_ELEMENT && $reader->name == 'office:meta') {
break;
}
if (!trim($reader->value)) {
continue;
}
$odt_meta[$elm] = $reader->value;
}
}
print_r($odt_meta);
?>`

This example uses the old API (PHP 4), it opens a ZIP file archive, reads each file in the archive and prints out its contents. The `test2.zip` archive used in this example is one of the test archives in the ZZIPlib source distribution.

Пример 4. Zip Usage Example

`<?php
$zip = zip_open("/tmp/test2.zip");
if ($zip) {
while ($zip_entry = zip_read($zip)) {
echo "Name: " . zip_entry_name($zip_entry) . "\n";
echo "Actual Filesize: " . zip_entry_filesize($zip_entry) . "\n";
echo "Compressed Size: " . zip_entry_compressedsize($zip_entry) . "\n";
echo "Compression Method: " . zip_entry_compressionmethod($zip_entry) . "\n";
if (zip_entry_open($zip, $zip_entry, "r")) {
echo "File Contents:\n";
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
echo "$buf\n";
zip_entry_close($zip_entry);
}
echo "\n";
}
zip_close($zip);
}
?>`

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