Return Multidimensional Array From Function

Question

I encountered some issue in converting my existing vbs script to PowerShell script. I have illustrate here with some dummy codes instead of my original code. In example 1,

Answer 1

PowerShell unrolls arrays returned from a function. Prepend the returned array with the comma operator (,, unary array construction operator) to wrap it in another array, which is unrolled on return, leaving the nested array intact.

function testArray {
    $array1 = @()
    $array1 += ,@("Apple","Banana")

    return ,$array1
}