How to read all the PropertyBags for a SharePoint Site Collection!

#Script that gets all the property Bags in a SharePoint Site Collection using Client Side Object Model
# Required Parameters:
# -> $sUserName: User Name to connect to the SharePoint Site Collection.
# -> $sPassword: Password for the user.
# -> $sSiteUrl: SharePoint Online Site Url
$host.Runspace.ThreadOptions = “ReuseThread”

#Definition of the function that allows to read property bags in a SharePoint Site Collection
function ReadSiteCollection-PropertyBags
{
param ($sSiteColUrl,$sUserName,$sDomain,$sPassword)
try
{
#Adding the Client OM Assemblies
Add-Type -Path “<CSOM_Path>\Microsoft.SharePoint.Client.dll”
Add-Type -Path “<CSOM_Path>Microsoft.SharePoint.Client.Runtime.dll”

#SPO Client Object Model Context
$spCtx = New-Object Microsoft.SharePoint.Client.ClientContext($sSiteColUrl)
$spCredentials = New-Object System.Net.NetworkCredential($sUserName,$sPassword,$sDomain)
$spCtx.Credentials = $spCredentials

Write-Host “—————————————————————————-” -foregroundcolor Green
Write-Host “Reading PropertyBags values for $sSiteColUrl !!” -ForegroundColor Green
Write-Host “—————————————————————————-” -foregroundcolor Green

$spSiteCollection=$spCtx.Site
$spCtx.Load($spSiteCollection)
$spRootWeb=$spSiteCollection.RootWeb
$spCtx.Load($spRootWeb)
$spAllSiteProperties=$spRootWeb.AllProperties
$spCtx.Load($spAllSiteProperties)
$spCtx.ExecuteQuery()
$spPropertyBagKeys=$spAllSiteProperties.FieldValues.Keys
#$spoPropertyBagKeys
foreach($spPropertyBagKey in $spPropertyBagKeys){
Write-Host “PropertyBag Key: ” $spPropertyBagKey ” – PropertyBag Value: ” $spAllSiteProperties[$spPropertyBagKey] -ForegroundColor Green
}
$spCtx.Dispose()
}
catch [System.Exception]
{
write-host -f red $_.Exception.ToString()
}
}

#Required Parameters
$sSiteColUrl = “http://<SiteCollectionUrl>”
$sUserName = “<UserName>”
$sDomain=”<AD_Domain>”
$sPassword =””<AD_Domain>”

ReadSiteCollection-PropertyBags -sSiteColUrl $sSiteColUrl -sUserName $sUserName -sDomain $sDomain -sPassword $sPassword

When running the script, you should get the following output in the PowerShell ISE output: