How do I do a string replacement in a PowerShell function? | How do I convert function input parameters to the right type?


I want to return a string that has part of the URL passed into it removed.


**This works, but it uses a hard-coded string:**



```
function CleanUrl($input)
{
    $x = "http://google.com".Replace("http://", "")
    return $x
}

$SiteName = CleanUrl($HostHeader)
echo $SiteName

```

**This fails:**



```
function CleanUrl($input)
{
    $x = $input.Replace("http://", "")
    return $x
}

Method invocation failed because [System.Array+SZArrayEnumerator] doesn't contain a method named 'Replace'.
At M:\PowerShell\test.ps1:13 char:21
+     $x = $input.Replace( <<<< "http://", "")

```