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.

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

Parameter	Description
value	A WDDX packet

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> 
IsWDDX() returns #IsWDDX(packet)#<br> 
</cfoutput>