Description:
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I am confused, that there are not examples how to use read-write mode (w+) with 
binary modificator (b). Should it be "w+b"? Or "wb+"? or "bw+"? 

I've spend some time to understand how it works (i can test only on linux, so i am 
not sure in test results about "t" mode, but read-write operations should be done 
same on the any OS).

Please, explain on http://www.php.net/manual/en/function.fopen.php page, how can i 
use modes altogether, which ways are acceptable, thanks!

Test script:
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// In this example i use "t" modificator, but it does not matter exactly
// w+t
$h = fopen('test.file', 'w+t');
fwrite($h, "test \ntest \ntest \n");
fseek($h, 0);
$data = fread($h, filesize('test.file'));
var_dump($data); // data is written and read normally
fclose($h);

// wt+, same result
$h = fopen('test.file', 'wt+');
fwrite($h, "test \ntest \ntest \n");
fseek($h, 0);
$data = fread($h, filesize('test.file'));
var_dump($data); // data is written and read normally, 
fclose($h);

Expected result:
----------------
It is decribed in documentation:

1) how it is possible to combine modes ("t" and "b" in addition to usual ones), 
should it be w+b, wb+, etc. What is correct syntax?

2) is it enough to use "t" mode only when reading under windows, or i should write 
file first of all (to replace all \n with \r\n), and then read it normally? It is 
not clear



Actual result:
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Documentation description exists, but is not clear.