Create Project

function createProject ([int]$ProjectStart,[int]$ProjectEnd,[int]$PhaseStart,[int]$PhaseEnd) {

  for ($CurrentProject = $ProjectStart; $CurrentProject -le $ProjectEnd; $CurrentProject++) {
    for ($CurrentPhase = $PhaseStart; $CurrentPhase -le $PhaseEnd; $CurrentPhase++){
      New-Item -Path "C:\Projects\Project $CurrentProject\Phase $CurrentPhase" -ItemType "directory" -Force
    }
  }

}

$One = Read-Host "Project Start"
$Two = Read-Host "Project End"
$Three = Read-Host "Phase Start"
$Four = Read-Host "Phase End"

createProject $One $Two $Three $Four