Delete Site Column and correnponding all references using PowerShell Script

Delete Site Column and correnponding all references using PowerShell Script:

Below Script is used to delete the Site Column and the corresponding References that uses the same Column:

# Add SharePoint PowerShell Snapin

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


    $siteUrl = 'http://siteURL/'

    $fieldName = 'ArticleSorting'

    Write-Host “Start removing field:” $fieldName -ForegroundColor DarkGreen
    $site = Get-SPSite $siteUrl
    $web = $site.RootWeb

    #Delete field from all content types
    foreach($ct in $web.ContentTypes) {
        $fieldInUse = $ct.FieldLinks | Where {$_.Name -eq $fieldName }
        if($fieldInUse) {
            Write-Host “Remove field from CType:” $ct.Name -ForegroundColor DarkGreen
            $ct.FieldLinks.Delete($fieldName)
            $ct.Update()
        }
    }
    
    #Delete column from all lists in all sites of a site collection
    $site | Get-SPWeb -Limit all | ForEach-Object {
       #Specify list which contains the column
        $numberOfLists = $_.Lists.Count
        for($i=0; $i -lt $_.Lists.Count ; $i++) {
            $list = $_.Lists[$i]
            #Specify column to be deleted
            if($list.Fields.ContainsFieldWithStaticName($fieldName)) {
                $fieldInList = $list.Fields.GetFieldByInternalName($fieldName)

                if($fieldInList) {
                    Write-Host “Delete column from ” $list.Title ” list on:” $_.URL -ForegroundColor DarkGreen

                 #Allow column to be deleted
                 $fieldInList.AllowDeletion = $true
                 #Delete the column
                 $fieldInList.Delete()
                 #Update the list
                 $list.Update()
                }
            }
        }
    }

    # Remove the field itself
    if($web.Fields.ContainsFieldWithStaticName($fieldName)) {
        Write-Host “Remove field:” $fieldName -ForegroundColor DarkGreen
        $web.Fields.Delete($fieldName)
    }

    $web.Dispose()
    $site.Dispose()

#Delete the field below
DeleteField http://siteURL/ $fieldName