User Guide

IsWDDX 549
IsWDDX
Description
Determines whether a value is a well-formed WDDX packet.
Returns
True, if the value is a well-formed WDDX packet; False, otherwise.
Category
Decision functions, XML functions
Syntax
IsWDDX(value)
History
ColdFusion MX: Changed behavior: if the value parameter is not a WDDX packet, ColdFusion
returns False. (In earlier releases, ColdFusion threw an error.)
Parameters
Usage
This function processes a WDDX packet with a validating XML parser, which uses the WDDX
Document Type Definition (DTD).
To prevent CFWDDX deserialization errors, you can use this function to validate WDDX
packets from unknown sources.
Example
<cfset packet="
<wddxPacket version=’1.0’>
<header></header>
<data>
<struct>
<var name=’ARRAY’>
<array length=’3’>
<string>one</string>
<string>two</string>
</array>
</var>
<var name=’NUMBER’>
<string>5</string>
</var>
<var name=’STRING’>
<string>hello</string>
</var>
</struct>
</data>
</wddxPacket>"
>
<hr>
<xmp>
<cfoutput>#packet#
</xmp>
Parameter Description
value A WDDX packet