Description:
------------
php 5.2.0
I want get the string from begin to the end ("12345")
but return empty when set offset to 0

Reproduce code:
---------------
<?PHP
$tmp = tmpfile();
fwrite($tmp, "12345");
//rewind($tmp);
echo "---\n";
echo stream_get_contents($tmp, -1, 0);
echo "\n";
echo stream_get_contents($tmp, -1, 1);
echo "\n";
echo stream_get_contents($tmp, -1, 2);
echo "\n---";
?>

Expected result:
----------------
---
12345
2345
345
---

Actual result:
--------------
---

2345
345
---