#46043 [Opn->Bgs]: file_get_contents() gives "stream does not support seeking" error with offset

[iliaa]

 ID:               46043
 Updated by:       [EMAIL PROTECTED]
 Reported By:      [EMAIL PROTECTED]
-Status:           Open
+Status:           Bogus
 Bug Type:         Streams related
 Operating System: Linux, debian
 PHP Version:      5.2.6
 New Comment:

You cannot seek on non-local files.


Previous Comments:
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[2008-09-10 14:55:42] [EMAIL PROTECTED]

Description:
------------
file_get_contents() supports an offset. However, at certain times this
gives an "stream does not support seeking" at a certain offset. This
offset might differ with installations and the website a resource is
requested from.



Reproduce code:
---------------
file_get_contents("http://stock.ter.dk/taske.jpg";, null, null, 8000,
1000);

Expected result:
----------------
The content should be returned

Actual result:
--------------
Warning: file_get_contents(): stream does not support seeking in
Command line code on line 1

Warning: file_get_contents(): Failed to seek to position 8000 in the
stream in Command line code on line 1



The exact cutoff-point seem to differ. A script such as the following
gives different results at different servers.

<?php
$offset = 0;
$length = 500;
while ($file = file_get_contents("http://stock.ter.dk/taske.jpg";, null,
null, $offset, $length)) {
  print "$offset, $length\n";
  $offset += $length;
}
?>

PHP 5.2.6-0.dotdeb.1 with Suhosin-Patch 0.9.6.2 (cli):

0, 500
500, 500
1000, 500
1500, 500
2000, 500
2500, 500
3000, 500
3500, 500
4000, 500
4500, 500
5000, 500
5500, 500
6000, 500
6500, 500
7000, 500
7500, 500

Warning: file_get_contents(): stream does not support seeking in
/home/penguin/- on line 4

Warning: file_get_contents(): Failed to seek to position 8000 in the
stream in /home/penguin/- on line 4

PHP 5.2.0 (cli) (built: Nov 26 2006 10:25:07):

0, 500
500, 500
1000, 500

Warning: file_get_contents(): stream does not support seeking in
/home/penguin/- on line 4

Warning: file_get_contents(): Failed to seek to position 1500 in the
stream. in /home/penguin/- on line 4



The behaviour is the same whether php-cli or mod_php is used, as seen
at http://stock.ter.dk/filegetbug.php


(as a side note, file_get_contents() [or rather, the http stream] could
try to use a ranged request when an offset and range is present, with a
fallback to the current behaviour if the webserver returns the whole
file)



------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=46043&edit=1