Description:
------------
fgetcsv does not work if you have a unicode delimiter like § (paragraph).
setlocale() doesn't help.


Test script:
---------------
error_reporting(E_ALL);
                              
$enclosure='"';
$escape='"';

$delimiter=",";
$fh = tmpfile();
fwrite($fh,utf8_encode('"first"'.$delimiter.'"second"'.$delimiter.'"third"'."\n"));
fwrite($fh,utf8_encode('"one"'.$delimiter.'"two""two"'.$delimiter.'"three"'."\n"));
fseek($fh,0);
while (($data = fgetcsv($fh, 0, $delimiter,$enclosure,$escape)) !== FALSE) {
  print_r($data);
}
fclose($fh);

$delimiter=chr(167); // §
$fh = tmpfile();
fwrite($fh,utf8_encode('"first"'.$delimiter.'"second"'.$delimiter.'"third"'."\n"));
fwrite($fh,utf8_encode('"one"'.$delimiter.'"two""two"'.$delimiter.'"three"'."\n"));
$delimiter=utf8_encode($delimiter);
fseek($fh,0);
while (($data = fgetcsv($fh, 0, $delimiter,$enclosure,$escape)) !== FALSE) {
  print_r($data);
}

fclose($fh);


Expected result:
----------------
The line is splitted by unicode delimiter also. No warnings appear.
Array
(
    [0] => first
    [1] => second
    [2] => third
)
Array
(
    [0] => one
    [1] => two"two
    [2] => three
)
Array
(
    [0] => first
    [1] => second
    [2] => third
)
Array
(
    [0] => one
    [1] => two"two
    [2] => three
)


Actual result:
--------------
Warnings appear: "Notice: fgetcsv(): delimiter must be a single character in..."
The line is splitted using , but not using §:

Array
(
    [0] => first
    [1] => second
    [2] => third
)
Array
(
    [0] => one
    [1] => two"two
    [2] => three
)
Array
(
    [0] => first§"second"§"third"
)
Array
(
    [0] => one§"two""two"§"three"
)