Powershell Script to List out SharePoint Site Permission Details

$LogTime = Get-Date -Format yyyy-MM-dd_hh-mm
$LogFile = ".\UserPermissionsDetailsPatch-$LogTime.rtf"

# Add SharePoint PowerShell Snapin


if ( (Get-PSSnapin -Name Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue) -eq $null ) {
    Add-PSSnapin Microsoft.SharePoint.Powershell
}

$scriptBase = split-path $SCRIPT:MyInvocation.MyCommand.Path -parent
Set-Location $scriptBase

#Deleting any .rtf files in the scriptbase location
$FindRTFFile = Get-ChildItem $scriptBase\*.* -include *.rtf
if($FindRTFFile)
{
  foreach($file in $FindRTFFile)
  {
   remove-item $file
  }
}

start-transcript $logfile

$siteCollection = read-host "Enter the site collection URL "
$site = get-spsite $siteCollection
foreach($web in $site.allwebs)
  {
      $users = get-spuser -web $web.url -Limit ALL
      foreach($user in $users)
      {
          write-host $User.userlogin
          $permissionInfo = $web.GetUserEffectivePermissionInfo($User.userLogin)
          $roles = $permissionInfo.RoleAssignments
          write-host "Now checking the permissions of the user "  $User.userLogin " in the site " $web.Url -fore yellow
          for ($i = 0; $i -lt $roles.Count; $i++)
          {
              $bRoles = $roles[$i].RoleDefinitionBindings
              foreach ($roleDefinition in $bRoles)
              {
                  if ($roles[$i].Member.ToString().Contains('\'))
                  {
                      write-host "The User "  $user.userLogin  " has direct permissions "  $roleDefinition.Name -fore green
                  }
                  else
                  {
                      write-host "The User "  $user.userLogin  " has permissions "  $roleDefinition.Name  " given via "  $roles[$i].Member.ToString() -fore green
                  }
              }
          }
      }
  }