powershell use of where-object within script function not working - function

Question

I'm trying to enable my powershell profile script with a function that will let me do literal and wildcard searches for the presence of a function in my current powershell terminal session.
Within my powershell profile script [ $env:userprofile\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1 ] i've created the following function.
function Get-Fnc {
#Get-ChildItem function:\ | Where-Object { $_.Name -like "$args" }
Get-ChildItem function:\$args
}
Using the commented out line Get-ChildItem function:\ | Where-Object { $_.Name -like "$args" } doesn't work even though i can use that on the command line, e.g. Get-ChildItem function:\ | Where-Object { $_.Name -like "get-*" } it works as expected. Using the uncommented line Get-ChildItem function:\$args works both in the profile script function and the command line, e.g. Get-ChildItem function:\get-*.
Searching on net and in stackoverflow i've not been able to find any details on gotchas around making use of output piping | to another cmdlet and/or use of the Where-Object cmdlet within functions to determine how to make it work. Any insights on how to make output piped to where-object work in a script function when the same thing is known to work on command line?
Update
In addition to answer provided solutin was also able to use the following
function Get-Fnc {
$argsFncScope = $args # works because we make function scoped copy of args that flows down into Where-Object script block / stack frame
Write-Host "function scoped args assigned variable argsFncScope = $argsFncScope and count = $($argsFncScope.Count) and type = $($argsFncScope.GetType().BaseType)"
Get-ChildItem function:\ | Where-Object { $_.Name -like "$argsFncScope" }
}
Debug Output
get-fnc *-env
[DBG]: PS C:\Users\myusrn\Documents\WindowsPowerShell>
function scoped args assigned variable argsFncScope = *-env and count = 1 and type = array
[DBG]: PS C:\Users\myusrn\Documents\WindowsPowerShell>
CommandType Name Version Source
----------- ---- ------- ------
Function Get-Env

Answer 1

Each scriptblock has its own $args automatic variable.
function Get-Fnc {
Get-ChildItem function:\ | where-object { write-host $args;
$_.name -like "$args" } }
get-fnc get-*
# lots of empty lines
The $args for where-object is a $null array.
function Get-Fnc {
Get-ChildItem function:\ | where-object { $global:myargs = $args;
$_.name -like "$args" } }
get-fnc get-*
$myargs
$myargs.count
0
$myargs.gettype()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Object[] System.Array
You can however use the other version of where-object that doesn't use a scriptblock:
function Get-Fnc {
Get-ChildItem function:\ | where-object name -like $args }
get-fnc get-*
CommandType Name Version Source
----------- ---- ------- ------
Function Get-Fnc
See also: Why doesn't PowerShell Where-Object work when passing a variable?
I actually don't know a way to set $args within the where-object scriptblock, but here's another example of a scriptblock and $args. $args is actually an array.
& { $args[0]; $args[1] } hi there
hi
there