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IsXML
Last update:
May 18, 2026
Description
Determines whether a string is well-formed XML text.
Returns
True, if the function parameter is a string that contains well-formed XML text; False, otherwise.
Category
Function syntax
IsXML(value,parserOptions)See also
IsXmlAttribute, IsXmlDoc, IsXmlElem, IsXmlNode, IsXmlRoot, XmlParse, XmlValidate; Using XML and WDDX in the Developing ColdFusion Applications
History
ColdFusion (2018 release): Introduced named parameters.
ColdFusion MX 7: Added this function.
Parameters
Parameter | Description |
value parserOptions | A string containing the XML document text XML parsing options |
Usage
This function determines whether text is well-formed XML, that is, it conforms to all XML syntax and structuring rules. The string does not have to be a complete XML document. The function does not validate against a Document Type Definition (DTD) or XML Schema.
Example
The following example creates two strings, and tests whether they are well-formed XML text:
<!--- A well formed XML string --->
<cfset xmlString1='<order id="4323251">
<customer firstname="Philip" lastname="Cramer" accountNum="21"/>
<items>
<item id="43">
<quantity>1</quantity>
<unitprice>15.95</unitprice>
</item>
</items>
</order>'
>
<!--- An invalid XML string, missing the </item> close tag --->
<cfset xmlString2='<order id="4323251">
<customer firstname="Philip" lastname="Cramer" accountNum="21"/>
<items>
<item id="43">
<quantity>1</quantity>
<unitprice>15.95</unitprice>
</items>
</order>'
>
<!--- Test the strings to see if they are well formed XML --->
<cfoutput>
xmlString1 contains the following text:<br><br>
#HTMLCodeFormat(xmlstring1)#
Is it well formed XML text? #IsXML(xmlString1)#<br><br>
<hr>
xmlString2 contains the following text:<br><br>
#HTMLCodeFormat(xmlstring2)#
Is it well formed XML text? #IsXML(xmlString2)#
</cfoutput>
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