PHP 8.0.3 Released!

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'];
?>
add a note add a note

User Contributed Notes 3 notes

up
19
from dot php dot net at brainbox dot cz
10 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
14
admin deskbitz net
10 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
6
sandaimespaceman at gmail dot com
12 years ago
Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain,

I tried it.
To Top