ZipArchive::statIndex

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

    ZipArchive::statIndex — Obtenha os detalhes de uma entrada definida pelo seu índice

    Descrição

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

    A função obtém informações sobre a entrada definida pelo seu índice.

    Parâmetros

    index

    Índice da entrada

    flags

    ZipArchive::FL_UNCHANGED pode ser ORed para solicitar informações sobre o arquivo original no arquivo, ignorando quaisquer alterações feitas.

    Valor Retornado

    Retorna um array contendo os detalhes da entrada ou false em caso de falha.

    Exemplos

    Exemplo #1 Impressão das informações stat de uma entrada

    <?php
    $zip     = new ZipArchive;
    $res = $zip->open('test.zip');
    if (    $res === TRUE) {
    print_r($zip->statIndex(3));
    $zip->close();
    } else {
    echo     'failed, code:' . $res;
    }
    ?>

    O exemplo acima produzirá algo semelhante a:

    Array
(
    [name] => foobar/baz
    [index] => 3
    [crc] => 499465816
    [size] => 27
    [mtime] => 1123164748
    [comp_size] => 24
    [comp_method] => 8
)

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    Notas Enviadas por Usuários (em inglês) 3 notes

    up
    11
    eion at robbmob dot com
    8 years ago
    Note that the 'mtime' field only comes from the DOS-format time that's stored in the zip file, which is only accurate to the nearest 2-seconds. Zip files can store mtime's in multiple, optional fields but PHP's zip library does not retrieve them (nor does it provide API to access the extra fields)

    The end result is that you will see timestamps that could be out by one second (if the original timestamp was odd), and won't necessarily match was other unzip programs will show the mtime as.
    up
    0
    Chris Lewis
    12 years ago
    Note that the signed-integer CRC result is only true on 32-bit systems. 64-bit systems return correct CRCs.

    A safer way (as recommended by crc32() function page) might be:

    if ($file['crc'] < 0)
    $file['crc'] = sprintf("%u",$file['crc']);
    up
    -4
    Anonymous
    12 years ago
    The CRC returned from this method is a signed number and so can be negative. This isn't how most CRC's are represented and so can cause problems. Another thing to know is that the standerd CRC algorithm used for zip files is CRC32b.

    So to put this together lets say that you wanted to extract the first file from a zip and then compare the original CRC with the CRC for the extracted file this is what you would need to do. (proper error checking is omitted for simplicity).

    <?php
    $zip     = new ZipArchive();

    $zip->open("myZip.zip");

    $stat = $zip->statIndex( 0 );

    $name = $stat['name'];

    $oldCrc = $stat['crc'];

    $zip->extractTo("myPath", $name);

    $newCrc = hexdec(hash_file("crc32b", "myPath/" . $name));

    // Have to test both cases as the unsigned CRC from within the zip might appear negative as a signed int.
    if($newCrc !== $oldCrc && ($oldCrc + 4294967296) !== $newCrc) {
    echo     "The files don't match!";
    }
    ?>
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