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    data://

    data:// — データ (RFC 2397)

    説明

    data: (» RFC 2397) ストリームラッパーです。

    利用法

    • data://text/plain;base64,

    オプション

    ラッパーの概要
    属性 サポートの有無
    allow_url_fopen で制約される Yes
    allow_url_include で制約される Yes
    読み込み許可 Yes
    書き込み許可 No
    追加許可 No
    同時読み書き許可 No
    stat() のサポート No
    unlink() のサポート No
    rename() のサポート No
    mkdir() のサポート No
    rmdir() のサポート No

    例

    例1 data:// の内容の表示

    <?php
    // "I love PHP" と表示します
    echo file_get_contents('data://text/plain;base64,SSBsb3ZlIFBIUAo=');
    ?>

    例2 media type の取得

    <?php
    $fp     = fopen('data://text/plain;base64,', 'r');
    $meta = stream_get_meta_data($fp);

    // "text/plain" と表示します
    echo $meta['mediatype'];
    ?>

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    User Contributed Notes 3 notes

    up
    24
    from dot php dot net at brainbox dot cz
    14 years ago
    When passing plain string without base64 encoding, do not forget to pass the string through URLENCODE(), because PHP automatically urldecodes all entities inside passed string (and therefore all + get lost, all % entities will be converted to the corresponding characters).

    In this case, PHP is strictly compilant with the RFC 2397. Section 3 states that passes data should be either in base64 encoding or urlencoded.

    VALID USAGE:
    <?php
    $fp     = fopen('data:text/plain,'.urlencode($data), 'rb'); // urlencoded data
    $fp = fopen('data:text/plain;base64,'.base64_encode($data), 'rb'); // base64 encoded data
    ?>

    Demonstration of invalid usage:
    <?php
    $data     = 'Günther says: 1+1 is 2, 10%40 is 20.';

    $fp = fopen('data:text/plain,'.$data, 'rb'); // INVALID, never do this
    echo stream_get_contents($fp);
    // Günther says: 1 1 is 2, 10@ is 20. // ERROR

    $fp = fopen('data:text/plain,'.urlencode($data), 'rb'); // urlencoded data
    echo stream_get_contents($fp);
    // Günther says: 1+1 is 2, 10%40 is 20. // OK

    // Valid option 1: base64 encoded data
    $fp = fopen('data:text/plain;base64,'.base64_encode($data), 'rb'); // base64 encoded data
    echo stream_get_contents($fp);
    // Günther says: 1+1 is 2, 10%40 is 20. // OK
    ?>
    up
    12
    admin deskbitz net
    14 years ago
    If you want to create a gd-image directly out of a sql-database-field you might want to use:

    <?php
    $jpegimage     = imagecreatefromjpeg("data://image/jpeg;base64," . base64_encode($sql_result_array['imagedata']));
    ?>

    this goes also for gif, png, etc using the correct "imagecreatefrom$$$"-function and mime-type.
    up
    2
    sandaimespaceman at gmail dot com
    16 years ago
    Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain,

    I tried it.
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