count.ps1

Get-ChildItem -Path $folderPath -File -Recurse | Where-Object { $_.Extension -eq ".html" } | ForEach-Object {
    $fileName = $_.Name
    $fileCounts = @{}
    $content = Get-Content -Path $_.FullName -Raw
    foreach ($searchString in $searchStrings) {
        $occurrences = ($content | Select-String -Pattern $searchString -AllMatches).Matches.Count
        $fileCounts[$searchString] = $occurrences
    }
    Write-Output "File: $fileName"
    foreach ($searchString in $searchStrings) {
        if ($fileCounts.ContainsKey($searchString)) {
            Write-Output "$searchString : $($fileCounts[$searchString])" 
        }
    }
    Write-Output "`n"
}