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data://

data://Données (RFC 2397)

Description

L'enveloppe de flux data: (» RFC 2397).

Utilisation

  • data://text/plain;base64,

Options

Résumé de l'enveloppe
Attribut Supporté
Restreint par allow_url_fopen Oui
Restreint par allow_url_include Oui
Autorise la lecture Oui
Autorise l'écriture Non
Autorise l'ajout Non
Autorise la lecture et l'écriture simultanément Non
Support de la fonction stat() Non
Support de la fonction unlink() Non
Support de la fonction rename() Non
Support de la fonction mkdir() Non
Support de la fonction rmdir() Non

Exemples

Exemple #1 Affichage d'un contenu data://

<?php
// Affiche "I love PHP"
echo file_get_contents('data://text/plain;base64,SSBsb3ZlIFBIUAo=');
?>

Exemple #2 Récupération du type de média

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

// Affiche "text/plain"
echo $meta['mediatype'];
?>
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User Contributed Notes 3 notes

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23
from dot php dot net at brainbox dot cz
13 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
13 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
15 years ago
Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain,

I tried it.
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