Description:
------------
Hi,
There's a little bug with strings serialization, for strings containing characters with ascii code greater than 127 (with HP-UX v11).

We found that the problem is located in function  : php_wddx_serialize_string.
There is a line of code like :
     if (iscntrl((int)*p) {
When casting character (*p) to int for values greater than 127 (witch are considered negative) there is a sign extension so character '?'(ascii code 0xf0) become integer 0xfffffff0.
But the function iscntrl expects an integrer between 0 and 255, or the result is unpredictable.
The problem can be fixed by modifying the line above like :
     if(iscntrl((int)(unsigned char)*p) {	
Best Regards
Pierre-Marie MOULIERE

Reproduce code:
---------------
<?php
print "<u>Without locale :</u><br><br>";
print "???????????? ??????????? ? ?" . "<br>\n";
print wddx_deserialize(wddx_serialize_value("???????????? ??????????? ? ?")); 
print "<br><hr><br>";
print "<u>With locale (fr_FR.iso88591) :</u><br><br>";
setlocale(LC_CTYPE, "fr_FR.iso88591");
print "???????????? ??????????? ? ?" . "<br>\n";
print wddx_deserialize(wddx_serialize_value("???????????? ??????????? ? ?")); 
?>	


Expected result:
----------------
Result : 
Without locale :

???????????? ??????????? ? ?
???????????? ??????????? ? ?

-----------------------------------------------------------

With locale (fr_FR.iso88591) :

???????????? ??????????? ? ?
???????????? ??????????? ? ?



Actual result:
--------------
Result : 
Without locale :

???????????? ??????????? ? ?
???????????? ??????????? ? ?
		
-----------------------------------------------------------
		
With locale (fr_FR.iso88591) :
		
???????????? ??????????? ? ?
???????????? ??????????? ? ?