data://

data:// — Data (RFC 2397)

Açıklama

data: (» RFC 2397) akım sarmalayıcı.

Kullanımı

data://text/plain;base64,

Seçenekler

**Sarmalayıcı Seçenekleri**
Özellik	Destek
allow_url_fopen ile sınırlı	Evet
allow_url_include ile sınırlı	Evet
Okuma izni	Evet
Yazma izni	Hayır
Ekleme izni	Hayır
Aynı anda okuma ve yazma izni	Hayır
stat() desteği	Hayır
unlink() desteği	Hayır
rename() desteği	Hayır
mkdir() desteği	Hayır
rmdir() desteği	Hayır

Örnekler

Örnek 1 - data:// içeriğini basmak

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

Örnek 2 - Ortam türünü alıp getirmek

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

// prints "text/plain"
echo $meta['mediatype'];
?>

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User Contributed Notes 3 notes

down

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

?>

down

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.

down

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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