Function Description
DirectoryExists Determines whether a directory exists.
FileExists Determines whether a file exists.
FileIsEOF Determines whether ColdFusion has reached has reached the end of a file while reading the file.
IIf Evaluates a Boolean conditional dynamic expression.
IsArray Determines whether a value is an array.
IsBinary Determines whether a value is stored as binary data.
IsBoolean Returns true when a value is converted to Boolean.
IsClosure Checks if an object is a closure.
IsCustomFunction Determines whether an object is a custom function.
IsDate Determines whether a string or object can be converted to a date/time value.
IsDateObject Determines whether a value is a date/time object.
IsDDX Determines whether a DDX file exists or if a string contains DDX instructions.
IsDebugMode Determines whether debugging output is enabled.
IsDefined Evaluates a string value to determine if the value named in the string exists.
isFileObject Determines whether a value is a file object.
IsInstanceOf Determines if an object is an instance of a ColdFusion component or interface.
IsJSON Evaluates if a string is in a valid JSON format.
IsK2ServerABroker Deprecated Function
IsK2ServerDocCountExceeded Deprecated Function
IsK2ServerOnline Deprecated Function
IsLeapYear Determines whether a year is a leap year.
IsNull Returns true if an object is null.
IsNumeric Returns true if a string is converted to a numeric value.
IsNumericDate Returns true if a real number is a representation of a date/time object.
IsObject Determines if a value is an object.
IsPDFArchive Determines if a PDF document is archived or not.
IsPDFFile Determines if a PDF file is valid.
IsPDFObject Determines if a value is a PDF object.
IsQuery Determines if a value is a query.
IsSimpleValue Determines the type of a value.
IsStruct Determines if a variable is a structure.
IsUserInAnyRole Determines if an authenticated user belongs to a role in a list of roles.
IsValid Determines if a value satisfies a validation or data type rule.
IsWDDX Determines if a value is a well-formed WDDX packet.
IsXML Determines if a string is a well-formed XML text.
IsXmlAttribute Determines if a function parameter is an XML DOM attribute node.
IsXmlDoc Determines if a function parameter is a ColdFusion XML document object.
IsXmlElem Determines if a function parameter is a an XML document object element.
IsXmlNode Determines if a function parameter is an XML document object node.
IsXmlRoot Determines if a function parameter is the root element of an XML document object.
LSIsCurrency Determines if a string is a valid representation of a currency amount in the current locale.
LSIsDate Determines if a string is a valid representation of a date/time value in the current locale.
LSIsNumeric Determines if a string is a valid representation of a number in the current locale.
StructIsEmpty Determines if a structure contains values.
StructKeyExists Determines if a key is present in a structure.

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