Description:
------------
mysql_real_escape_string don't escape: \x00, \n, \r and \x1a as is mentioned in 
documentation:

http://co.php.net/manual/es/function.mysql-real-escape-string.php

and \r in a quote string in a insert into query, is a syntax error, I'm handling 
binary data (PDF Files).

Tested on Windows XP SP3 with PHP builds from PHP, and Centos 5.5 with personal 
configure, both using PHP 5.3.6 and in Windows, MySQL Server version is 5.5.8-log 
and Centos is 5.0.77-log


Client API version	mysqlnd 5.0.8-dev - 20102224 - $Revision: 308673 $

Test script:
---------------
$link = @mysql_pconnect("localhost","root","");
if (!$link)
{
	die('Not connected : ' . mysql_error());
}
echo "\\x00, \\n, \\r, \\, ', \" and \\x1a.";
echo "<br />\r\n";
print mysql_escape_string("\x00, \n, \r, \, ', \" and \x1a.");

Expected result:
----------------
\x00, \n, \r, \, ', " and \x1a.

\\x00, \\n, \\r, \\, \', \" and \\x1a.

Actual result:
--------------
\x00, \n, \r, \, ', " and \x1a.

\0, \n, \r, \\, \', \" and \Z.