PHP扩展之压缩与归档扩展3——Zip

此扩展可以让你透明地读写ZIP压缩文档以及它们里面的文件。

在PHP5.2以后，为了使用这些函数，必须在编译 PHP 时用 --enable-zip 配置选项来提供 zip 支持。

Example #1 创建一个 Zip 归档

<?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();
?>

Example #2 输出文档细节和列表

<?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";
?>

Example #3 Zip 流封装，读取一个 OpenOffice 文件的元信息

<?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);
?>

此例使用了旧的 API（PHP 4），它打开了一个 ZIP 文件归档，读取归档里的每个文件，并输出文件内容。此例用到的 test2.zip 文档是 ZZIPlib 源分布里测试文档中的一个。

Example #4 Zip 使用范例

<?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);
    }
?>

ZipArchive 类

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::close — Close the active archive (opened or newly created)
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::getCommentIndex — Returns the comment of an entry using the entry index
ZipArchive::getCommentName — Returns the comment of an entry using the entry 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::locateName — Returns the index of the entry in the archive
ZipArchive::open — Open a ZIP file archive
ZipArchive::renameIndex — Renames an entry defined by its index
ZipArchive::renameName — Renames an entry defined by its name
ZipArchive::setArchiveComment — Set the comment 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::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.

相关函数

zip_close — Close a ZIP file archive
zip_entry_close — Close a directory entry
zip_entry_compressedsize — Retrieve the compressed size of a directory entry
zip_entry_compressionmethod — Retrieve the compression method of a directory entry
zip_entry_filesize — Retrieve the actual file size of a directory entry
zip_entry_name — Retrieve the name of a directory entry
zip_entry_open — Open a directory entry for reading
zip_entry_read — Read from an open directory entry
zip_open — Open a ZIP file archive
zip_read — Read next entry in a ZIP file archive

编程技巧