PHPのお勉強！

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    例

    例1 Zip アーカイブの作成

    <?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();
    ?>

    例2 アーカイブの詳細の出力および一覧表示

    <?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";
    ?>

    例3 Zip ストリームラッパーによる OpenOffice メタ情報の読み込み

    <?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);
    ?>

    この例は旧 API (PHP 4 用) を使用します。まず ZIP ファイルアーカイブをオープンし、アーカイブ内の各ファイルを読み込み、 その内容を出力します。この例で使用するアーカイブ test2.zip は、ZZIPlib のソース配布物に含まれているテスト用アーカイブのひとつです。

    例4 Zip の使用例

    <?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);

    }
    ?>

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    User Contributed Notes 4 notes

    up
    38
    info at peterhofer dot ch
    16 years ago
    All these examples will not work if the php script has no write access within the folder.

    Although you may say this is obvious, I found that in this case, $zip->open("name", ZIPARCHIVE::CREATE) doesn't return an error as it might not try to access the file system but rather allocates memory.

    It is only $zip->close() that returns the error. This might cause you seeking at the wrong end.
    up
    8
    webmaster @ anonymous
    11 years ago
    you can use this code for reading JAR files (java archives)

    JAR files use the same ZIP format, so can be easily read

    $zf = zip_open(realpath('D:/lucene/allinone/lucene-core.jar')); $i=1;
    while($zf && $ze = zip_read($zf)) {
    $zi[$i]['zip entry name']= zip_entry_name($ze);
    $zi[$i]['zip entry filesize']= zip_entry_filesize($ze);
    $zi[$i]['zip entry compressed size']= zip_entry_compressedsize($ze);
    $zi[$i]['zip entry compression method']= zip_entry_compressionmethod($ze);
    $zi[$i]['zip entry open status'] = zip_entry_open($zf,$ze);
    //$zi[$i]['zip entry file contents'] = zip_entry_read($ze,100);
    $i++;
    }
    print_r($zi);
    zip_close($zf);
    up
    11
    geandjay at gmail dot com
    16 years ago
    <?php
    $zip     = new ZipArchive;
    $zip->open('teste.zip');
    $zip->extractTo('./');
    $zip->close();
    echo     "Ok!";
    ?>
    up
    0
    Stefano Di Paolo
    16 years ago
    1) If you want to add files to a ZIP archive but you don't know if the ZiP file exists or not, you MUST check: this changes the way you open it !.
    2) you can not append multiple flags, can use only one (or none).

    If the zip does not exists, open it with:
    $ziph->open($archiveFile, ZIPARCHIVE::CM_PKWARE_IMPLODE)
    (or a different compression method)

    If the zip already exists, open it with:
    $ziph->open($archiveFile)
    or
    $ziph->open($archiveFile, ZIPARCHIVE::CHECKCONS)

    Example: make backup files every hour and ZIP them all in a daily ZIP archive, so you want to get only one ZIP per day, each ZIP containing 24 files:
    <?php
    function archivebackup($archiveFile, $file, &$errMsg)
    {
    $ziph = new ZipArchive();
    if(    file_exists($archiveFile))
    {
    if(    $ziph->open($archiveFile, ZIPARCHIVE::CHECKCONS) !== TRUE)
    {
    $errMsg = "Unable to Open $archiveFile";
    return     1;
    }
    }
    else
    {
    if(    $ziph->open($archiveFile, ZIPARCHIVE::CM_PKWARE_IMPLODE) !== TRUE)
    {
    $errMsg = "Could not Create $archiveFile";
    return     1;
    }
    }
    if(!    $ziph->addFile($file))
    {
    $errMsg = "error archiving $file in $archiveFile";
    return     2;
    }
    $ziph->close();

    return     0;
    }
    ?>
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