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cfdump

Outputs the elements, variables and values of most kinds of ColdFusion objects. Useful for debugging. You can display the contents of simple and complex variables, objects, components, user-defined functions, and other elements.

Debugging tags, Variable manipulation tags

<cfdump 
   var = "#variable#"
   expand = "Yes or No" 
   label = "text">

cfcookie, cfparam, cfsavecontent, cfschedule, cfset, cfwddx

ColdFusion MX 6.1: Added the ability to dump COM objects; it displays the methods and Get and Put properties typeinfo information for the object.

Attribute

Req/Opt

Default

Description

var

Required

 

Variable to display. Enclose a variable name in pound signs.

These kinds of variables yield meaningful cfdump displays:

  • array
  • CFC
  • COM object
  • Java object
  • simple
  • query
  • structure
  • UDF
  • wddx
  • xml

expand

Optional

Yes
  • Yes: In Internet Explorer and Mozilla, expands views
  • No: contracts expanded views

label

Optional

 

A string; header for the dump output.

The expand/contract display capability is useful when working with large structures, such as XML document objects, structures, and arrays.

To display a construct, use code such as the following, in which myDoc is a variable of type XmlDocument:

<cfif IsXmlDoc(mydoc) is "True">
   <cfdump var="#mydoc#">
</cfif>

The tag output is color-coded according to data type.

If a table cell is empty, this tag displays "[empty string]".

 

This example shows how to use this tag to display a URL variable. URL variables contain parameters that are passed in a URL string in a page request. 

<cfdump var="#URL#">
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