Inserts a value into an array. Array elements whose indexes are equal to or greater than the new position are incremented by one. The array length increases by one.

True, on successful completion.

Array functions

ArrayInsertAt(array, position, value)

ArrayDeleteAt; "Functions for XML object management" in Chapter 35, "Using XML and WDDX," in ColdFusion MX Developer's Guide

ColdFusion MX:

• Changed behavior: this function can be used on XML objects.
• Changed thrown exceptions: this function can throw the InvalidArrayIndexException error.

To apply the ArrayInsert() function to a multidimensional array, you must specify all but the last index in the array parameter. For example, the following code inserts an element at myarray[2][4]:

<cfset ArrayInsertAt(myarray[2], 4, "test")>

If this function attempts to insert an element at position 0, or specifies a value for position that is greater than the size of array, this function throws an InvalidArrayIndexException error.

<h3>ArrayInsertAt Example</h3><p>
<!--- create a new array --->
<cfset DaysArray = ArrayNew(1)>
<!--- populate an element or two --->
<cfset DaysArray[1] = "Monday">
<cfset DaysArray[2] = "Tuesday">
<cfset DaysArray[3] = "Thursday">
<!--- add an element before position 3 --->
<p>Add an element before position 3:
   <cfoutput>#ArrayInsertAt(DaysArray,3,"Wednesday")#</cfoutput>
<p>Now output the array as a list:
<cfoutput>#ArrayToList(DaysArray)#</cfoutput>
<!--- The array now has four elements. Element 3, "Thursday", has become 
element four --->