Description:
------------
The function fgetcsv has a problem when I parse a csv file.

If you parse a csv for example with delimeter pipe ("|") and you backslashes a pipe, the function shouldn't take it that a delimeter.

Reproduce code:
---------------
csv_file.csv content:

foo|foo_1\|foo_2

----------------------------------
fgetcsv.php content:

<?php
	$handle = fopen('csv_file.csv','r');
	while(($line = fgetcsv($handle,1000,'|')) !== false)
	{
		print '<pre>'; print_r($line); print '</pre>';
	}
?>


Expected result:
----------------
Array
(
    [0] => foo
    [1] => foo_1|foo_2
)

Actual result:
--------------
Array
(
    [0] => foo
    [1] => foo_1\
    [2] => foo_2
)