data://

data:// — Data (RFC 2397)

Açıklama

The data: (» RFC 2397) stream wrapper is available since PHP 5.2.0.

Seçenekler

data://text/plain;base64,

Seçenekler

**Wrapper Summary**
Attribute	Supported
Restricted by allow_url_fopen	No
Restricted by allow_url_include	Yes
Allows Reading	Yes
Allows Writing	No
Allows Appending	No
Allows Simultaneous Reading and Writing	No
Supports stat()	No
Supports unlink()	No
Supports rename()	No
Supports mkdir()	No
Supports rmdir()	No

Örnekler

Örnek 1 Print data:// contents


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

Örnek 2 Fetch the media type


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

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

glob://

zlib://

[edit] Last updated: Fri, 23 Mar 2012

add a note User Contributed Notes data://

senica at gmail dot com 03-Oct-2011 01:20


You can use data:// to evaluate php that is stored in mySQL



For example:



If you have code stored that looks like this:

$content = ' //Content from your database or variable

  <?php if($var == "something"): ?>

    print this html

  <?php endif; ?>

';



Trying to evaluate this can prove cumbersome



But you can do something like:



include "data://text/plain;base64,".base64_encode($content);



and it will parse it with no problems.

from dot php dot net at brainbox dot cz 18-Nov-2010 04:37


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


?>

admin deskbitz net 02-May-2010 12:54


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.

sandaimespaceman at gmail dot com 06-Sep-2008 06:30


Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain,



I tried it.

togos00 at gmail dot com 08-Apr-2008 12:56


Note that the official data URI scheme does not include a double slash after the colon - that you must include it when making calls to PHP is an artifact of the designers' misunderstanding of URL syntax.





To automatically convert proper data URIs to ones understood by PHP, you can use code such as the following:





<?php


function convertUriForPhp( $uri ) {


    if( preg_match('/^data:(?!\\/\\/)(.*)$/',$uri,$bif) ) {


        return 'data://' . $bif[1]; 


    } else {


        return $uri;


    } 


}


?>

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