Description:
------------
It seems the behavior of wddx_deserialize is inconsistent or at least unpredictable based on the given documentation. Not only between PHP 4 and 5, also based on the given packet data. I am not sure if this is a bug or expected behavior. I am aware of bug #34928 - so please don't just treat this as bogus.

The following script behaves as described on PHP 5.0.5 on Windows and 5.0.4 on Linux (currently i have no 5.0.5 Linux testcase available) and PHP 4.3.9 on Linux. At least the windows version is a complete default installation.

Please clearify what wddx serialize and deserialize exactly do (encoding), why the documentation encourages to add an additional utf8_encode to non-ascii characters on serialize and how the entire process can be influenced (e.g. which configs get used). setlocale() and putenv("locale=xyz") have no effect.

Currently wddx_serialize adds no character set information and keeps whatever you supply as a string inside the resulting wddx file. So if you send an extended character in ISO-8859-1 or UTF-8 it will be the same in the resulting wddx packet.

The deserializer seems to always convert the packet to ISO-8859-1 unless you explicitly set information in the XML file that it is already ISO-8859-1 (even if there is UTF-8 content in it). 

If the documentation entry to always utf8_encode a string before sending it to serialize is correct, it would mean you would have to double encode an UTF-8 string. But that seems like a dirty workaround. 

From my perspective both wddx_serialize and wddx_deserialize should add/respect the information to the XML file and get an additional parameter to enforce an input or output encoding or overwrite the default behavior.

Currently i try to deserialize wddx packets produced with PHP4 in PHP5. They are stored in a database, firstly in MySQL4 (latin1 encoded) and now migrated to MySQL5 (utf8 encoded). What is the proper way to handle that? utf8_encode the packet (producing a double encoded packet) before sending to wddx_deserialize (which implicitly adds a utf8_decode on that data) seems like an evil hack in a undocumented area.

This seems like a common migration path to me, so please specifiy clearly what to expect and what to do.






Reproduce code:
---------------
<?php

header("Content-type: text/html; charset=UTF-8"); 

echo "ISO-8859-1 specified, ISO-8859-1 data<br>";
echo "produces latin1 output [php5]<br>";
echo "produces ISO-8859-1 output [php4]<br>";
echo wddx_deserialize("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?><wddxPacket version='1.0'><header/><data><string>abc-???</string></data></wddxPacket>")."<hr>";

echo "UTF-8 specified, ISO-8859-1 data<br>";
echo "non-ascii characters get stripped [php5]<br>";
echo "produces ISO-8859-1 output [php4]<br>";
echo wddx_deserialize("<?xml version=\"1.0\" encoding=\"UTF-8\"?><wddxPacket version='1.0'><header/><data><string>abc-???</string></data></wddxPacket>")."<hr>";;

echo "Nothing specified, ISO-8859-1 data<br>";
echo "non-ascii characters get stripped [php5]<br>";
echo "produces ISO-8859-1 output [php4]<br>";
echo wddx_deserialize("<wddxPacket version='1.0'><header/><data><string>abc-???</string></data></wddxPacket>")."<hr>";;

echo "ISO-8859-1 specified, UTF-8 data<br>";
echo "produces utf-8 output [php5]<br>"; 
echo "produces UTF-8 output [php4]<br>";
echo wddx_deserialize("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?><wddxPacket version='1.0'><header/><data><string>".utf8_encode("abc-???")."</string></data></wddxPacket>")."<hr>";;

echo "UTF-8 specified, UTF-8 data<br>";
echo "produces latin1 output [php5]<br>"; 
echo "produces UTF-8 output [php4]<br>";
echo wddx_deserialize("<?xml version=\"1.0\" encoding=\"UTF-8\"?><wddxPacket version='1.0'><header/><data><string>".utf8_encode("abc-???")."</string></data></wddxPacket>")."<hr>";;

echo "Nothing specified, UTF-8 data<br>";
echo "produces latin1 output [php5]<br>";
echo "produces UTF-8 output [php4]<br>";
echo wddx_deserialize("<wddxPacket version='1.0'><header/><data><string>".utf8_encode("abc-???")."</string></data></wddxPacket>")."<hr>";;

?>