PNP PowerShell script

<#
.Synopsis
   Check and Updates sharing settings confirm the new policy
.DESCRIPTION
   This script will check and Update the sharing settings confirm the new policy
.EXAMPLE
   .\SetSharingMethods.ps1 -siteUrl "https://mytenant.sharepoint.com/teams/T2017_88001-TST" -requestEmail "jurgen.wiersema@ka.bla.nl" -sharingEnabledInt 1 -allowMembersEditMembershipInt 1

 
#>

Param
(
    # The SharePoint site url to run this script on
    [Parameter(Mandatory = $true, Position = 1)]
    [ValidateNotNullOrEmpty()]
    [string]
    $siteUrl,

   # The request access email address to set in the site
    [Parameter(Mandatory = $true, Position = 2)]
    [string]
    $requestEmail,

    # 0 to disable sharing and 1 to enable sharing
    [Parameter(Mandatory = $true, Position = 3)]
    [ValidateNotNullOrEmpty()]
    [ValidateSet(0,1)]
    [int]
    $sharingEnabledInt,

    [Parameter(Mandatory = $true, Position = 4)]
    [ValidateNotNullOrEmpty()]
    [ValidateSet(0,1)]
    [int]
    $allowMembersEditMembershipInt
)

function checkSharing($web, $requestEmail, $sharingEnabled, $allowMembersEditMembership) {
    #disable request email
    $web.RequestAccessEmail = $requestEmail

    #set sharing for members
    $web.MembersCanShare = $sharingEnabled
    $web.Update();
    $web.Context.Load($web);
    $web.Context.ExecuteQuery();

    $group = $web.AssociatedMemberGroup;
    $web.Context.Load($group);
    $web.Context.ExecuteQuery();

    $web.MembersCanShare = $sharingEnabled;
   
    $group.AllowMembersEditMembership = $allowMembersEditMembership;   
   
    $group.Update();
    $web.Update();
    $web.Context.Load($group);
    $web.Context.Load($web);
    $web.Context.ExecuteQuery();   
}

try {

    $cred = Get-AutomationPSCredential -Name "SHAREPOINTADMIN";

    Connect-PnPOnline -Url $siteUrl -Credentials $cred;

    Write-Output "Check site: $($siteUrl)";
    $rootweb = Get-PnPWeb;

    $sharingEnabled = $false;
    $allowMembersEditMembership = $false;

    if ($sharingEnabledInt -eq 0)
    {
        $sharingEnabled = $false;
    }
    else
    {
        $sharingEnabled = $true;
    }

    if ($allowMembersEditMembershipInt -eq 0)
    {
        $allowMembersEditMembership = $false;
    }
    else
    {
        $allowMembersEditMembership = $true;
    }

    if ($requestEmail -eq 'empty')
    {
        $requestEmail = "";
    }

    Write-Output "Setting sharing to $sharingEnabled , allow members to edit memberschip to $allowMembersEditMembership and email to $requestEmail on site $siteUrl";

    #check sharing policy
    checkSharing -web $rootweb -requestEmail $requestEmail -sharingEnabled $sharingEnabled -allowMembersEditMembership $allowMembersEditMembership;

    Write-Output "Script finished succesfully.";
}
catch {
    $ErrorMessage = $_.Exception.Message;
    Write-Output $ErrorMessage;
    Write-Output "Script finished with error.";
}