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Bug #19628 WDDX should allow user to specify the variable type
Submitted: 2002-09-27 01:15 UTC Modified: 2002-10-03 04:04 UTC
From: jimmy at accellion dot com Assigned: jan (profile)
Status: Closed Package: WDDX related
PHP Version: 4.2.0 OS: All
Private report: No CVE-ID: None
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From: jimmy at accellion dot com
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 [2002-09-27 01:15 UTC] jimmy at accellion dot com
I am using PHP's WDDX and find it very useful, 
but that's only if I use it to exchange data 
between PHP program. Once I have to exchange
the data with other languange I begin to face 
problem after problem, mostly because of the 
way PHP's WDDX interpret the variable type.

The solution for this is, instead of 
auto-detecting the type of a var, PHP's WDDX 
should allow the user to explicitly specify 
the type they want the vars to be encoded as.

For example:

$string = "1";
wddx_serialize($string, WDDX_INTEGER);
// var $string will be encoded as integer, 
// instead of string

$file_name = "contain some unicode char";
wddx_serialize($file_name, WDDX_BINARY);
// var $file_name will be encoded 
// as binary, instead of string

Two good reasons why this should be implemented:

1. The main purpose of WDDX is to exchange data 
   between diff lang, and auto-detecting var type 
   will break this purpose.  Moreover, the
   type-juggling in PHP will make the case worst.

   For example, consider these two data:

     array ("2" => "Two", "4" => "Four", "5" => "Five");
     array ("0" => "Zero", "1" => "One", "2" => "Two");

   The first one will be interpreted by WDDX as hash 
   (assoc array).  But the second one, where the key 
   happen to be a sequence starting from 0, will be 
   interpreted as normal array, not hash.

2. If users can specify the type of a variable, 
   then PHP's WDDX can support all type which 
   is defined in WDDX standard.
   For example binary type. Currently there's no way 
   to create a WDDX packet with binary type, because 
   PHP don't have binary type variable.  There's a
   workaround to manually base64 the var, but this
   will require a change at the other end to handle 
   this workaround too, which in some cases is 
   not possible.


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 [2002-09-27 01:20 UTC]
 [2002-10-03 04:04 UTC]
This bug has been fixed in CVS.

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Thank you for the report, and for helping us make PHP better.

we have wddx_serialize_type now
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