Description:
------------
Pass a variable to the delimiter and enclosure of the fgetcsv returns the error:

Warning: fgetcsv() [function.fgetcsv]: enclosure must be a character in ....

It seems that it will only accept it hard coded:
fgetcsv($handle, 2000, ",", '')
All a bit wierd!

Used the latest CVS

Works in 4.3.7


Reproduce code:
---------------
function csv_import($file, $delimiter = ",", $enclosure='') {
$handle = fopen($file, "r");
	$csv_arr = array();
	 while (($data_arr = fgetcsv($handle, 2000, $delimiter, $enclosure)) !== FALSE) {
		$csv_arr[] = $data_arr;
		$row++;
	 }
	 fclose($handle);
 }

Expected result:
----------------
No error