CFDUMP  
Description
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.
 
Category
Debugging tags, Variable manipulation tags
 
Syntax
<cfdump 
   var = "#variable#"
   expand = "Yes or No" 
   label = "text">
 
See also
cfcookie, cfparam, cfsavecontent, cfschedule, cfset, cfwddx
 
History
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.
 
Usage
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]".
 
Example

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#">
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
 
Default value: "Yes"
  • Yes: In Internet Explorer and Mozilla, expands views
  • No: contracts expanded views
LABEL  
  Optional
 

A string; header for the dump output.