arrayLen

Determines the number of elements in an array.
CF MX: this function can be used on child XML objects.

arrayLen(array) → returns numeric

someArray.len()

Argument Reference

An array which to determine length

Version 3+ The member function cannot be called on literals

Uses the arrayLen function to get the total length of an array

numberArray = [1,2,3,4];
writeOutput(arrayLen(numberArray));

Expected Result: 4

CF 11+ Lucee 4.5+ Uses the len member function is the same as running arrayLen.

colorArray = ['Green','red','blue'];
writeOutput(colorArray.len());

Expected Result: 3