[PHP-BUG] Req #51496 [NEW]: fgetcsv should take empty string as an escape

From:             
Operating system: All
PHP version:      5.3.2
Package:          Filesystem function related
Bug Type:         Feature/Change Request
Bug description:fgetcsv should take empty string as an escape

Description:
------------
Currently fgetcsv() gives a warning if the escape parameter is set as an
empty string (and the default is a backslash). I have some data that has
backslashes in it and it's not an escape character. Even though most of the
times fgetcsv() reads the data correctly, there is a little chance it will
do it wrong if a backslash is the last character of a multiline cell, which
is usually stored like this:

"\\\line1
line2\\\"

In order to fix that I supply chr(8) as an escape character because I know
for sure the data does not have the character. And if I pass an empty
string instead fgetcsv() will give a warning and refuse to read a line. 

I suggest that fgetcsv() does accept an empty string as an escape and do no
escaping in that case, which is quite usual. 
For ex., a MySql statement "Load Data Infile ... Into Table" has it as
"Escaped By None" to achieve the same result. 




Test script:
---------------
if (!$Handle=fopen("sites.txt", "rb")) return false;
print_r(fgetcsv($Handle, 0, "\t", '"', ""));
fclose($Handle);


Expected result:
----------------
array( ... ) - depends on the input file

Actual result:
--------------
Warning: fgetcsv(): escape must be character in ...

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51496&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51496&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51496&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51496&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51496&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51496&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51496&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51496&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51496&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51496&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51496&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51496&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51496&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51496&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51496&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51496&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51496&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51496&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51496&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51496&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51496&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51496&r=mysqlcfg