Passing a string type to a function

Question

I have the following code:

cls
$input = 'Hello World'
Write-Host '$input.GetType() = ' + $input.GetType()

function some-string-function($input)
{
    Write-Host 'In the function now'
    Write-Host '$input.GetType() = ' + $input.GetType()
    Write-Host '$input (value)   = ' + $input
    return $input.length
}

$result = some-string-function $input

"`$result = $result"

I am getting the following:

$input.GetType() =  + System.String
In the function now
$input.GetType() =  + System.Collections.ArrayList+ArrayListEnumeratorSimple
$input (value)   =  + System.Collections.ArrayList+ArrayListEnumeratorSimple
$result = 

Can someone point out how do I actually pass a string to a function in PowerShell please?

Answer 1

As clarification for my comment $input is a reserved automatic variable. If you change it in your some-string-function with another named variable you will have the expected behaviour.