Powershell - Matching text from array and string? - powershell

Question

I have an array that simply pulls a list of numbers in one long column. I am trying to match it with some data in a string and if it matches, I am wanting it to state Down otherwise it will state Up in the output CSV.
Here is my code: `
IF($RESULTS -like $TEST)
{$Output = "DOWN"
}ELSE{
$OUtput = "UP"
}
`
$RESULTS is the array, and $TEST is the string. If I do -match it works, but -match only pulls single digits so it gives false positives. For example, if there is a 3 in the list as well as 638 it will mark them both as down. None of the other switches seem to work like -eq, -like, etc.
What am I missing please?
Thanks much for any assistance!
EDIT:
Sample of Data in $TEST
2
3
5
Sample of Output of $RESULTS
5
628
Since 5 exists in both, my expected output would be DOWN and everything else would be UP.

Answer 1

It sounds like you have two arrays of numbers, and you want to test if the input array contains at least one of the values in the test array.
You can use Compare-Object, which compares two arrays and indicates which elements are different and, with -IncludeEqual, also which ones are the same:
if (
(Compare-Object -IncludeEqual $RESULTS $TEST).
Where({ $_.SideIndicator -eq '==' }).
Count -gt 0
) {
$Output = "DOWN"
}
else {
$Output = "UP"
}
As an aside:
You can use an if statement as an expression, which means you only need to specify $Output once:
$Output =
IF (<# conditional #>) {
"DOWN"
}
ELSE {
"UP"
}
In PowerShell (Core) 7+, you can use ?:, the ternary conditional operator for a more concise solution:
$Output = <# conditional #> ? 'DOWN' : 'UP'

Answer 2

I would do it by using "foreach". Hope this might be helpful
foreach ($result in $RESULTS){
if ($result -like $Test){
$OUTPUT = "Down"}
else{
$OUTPUT= "UP"}
}

Answer 3

In your edited question you show that variable $TEST is also an array, so in that case you can do
$TEST = 2,3,5
$RESULTS = 5,628
# compare both arrays for equal items
$Output = if ($TEST | Where-Object { $RESULTS -contains $_ }) {"DOWN"} else {"UP"}
$Output
In this case, $Output will be DOWN because both arrays have the number 5
If however variable $TEST contains a multiline string, then first create an array out of that like
$TEST = #'
2
3
5
'#
# convert the string to array by splitting at the newline
$TEST = $TEST -split '\r?\n' -ne ''
$RESULTS = 5,628
# compare both arrays for equal items
$Output = if ($TEST | Where-Object { $RESULTS -contains $_ }) {"DOWN"} else {"UP"}
$Output