SP2013 User Permissions.ps1

function Create-SPPermissionsReport($path , $isRecursive)
{

  $web = (Get-SPWeb $path)
  $users = (Get-SPUser -web $web -Limit ALL)
  $users | ForEach { 
      [pscustomobject]@{
        'Name' = $_.Name
        'Email' = $_.Email
        'UserLogin' = $_.UserLogin
        'Explicit Roles' = $_.Roles | ForEach { $_.Name }
        'Roles via Groups' = $_.Groups | ForEach { $_.Roles | ForEach { $_.Name } } 
        'Groups' = $_.Groups
        'Url' = $web.Url
      }
  }
  if($isRecursive) 
  { 
    $web.Webs | foreach{ 
        Create-SPPermissionsReport $_.Url $isRecursive 
    } 
  }
}

Create-SPPermissionsReport -Path "http://localhost" -IsRecursive $true | export-csv "C:\Temp\permissionsReport.csv"