PowerShell Script to List All Users who have access into document library in SharePoint site

Add-PSSnapin "Microsoft.SharePoint.PowerShell"

$web = Get-SPWeb -Identity https://bw.bytes.co.za/applications/

$list = $web.Lists[“Client Billing”]
$siteCollUsers = $web.SiteUsers

$filename = "E:\Applications\application_usersxyz1.csv"

foreach($MyUser in $siteCollUsers)
{
#Write-Host ” ————————————- ”
#Write-Host “Site Collection URL:”, $SiteCollectionURL
if($list.DoesUserHavePermissions([Microsoft.SharePoint.SPBasePermissions]::ViewListItems,$MyUser) -eq $true)
{
#Write-Host “User : “, $MyUser.LoginName
#Write-Host “Assigned Permissions : “, $list.GetUserEffectivePermissions($MyUser.LoginName)

 "User:" + $MyUser.UserLogin +"     "+ "User Name: " +$MyUser.name + "     " + "Email: " +$MyUser.Email  | Out-File $filename -Append


}
#Write-Host ” ————————————- ”
}