Powershell script to check and count number of site collections in a web application

This PowerShell script will get the count of all site collections in a web application

param($Site,$FilePath)
 
Add-PSSnapin microsoft.sharepoint.powershell -ErrorAction SilentlyContinue
 
function GenerateAllSitecollectionsCountInWebapplication ($url)
{
    write-host "Extracting the count of site collections in web application....." -foregroundcolor black
    try
      {
         $Site=Get-SPSite $url      
         $spWebApp = $Site.WebApplication
         write-host Total count in $url is   $Site.WebApplication.Sites.Count -foregroundcolor red
      }
   catch
      {
          write-host "Unable to Extract Sitecollection count .."  -foregroundcolor red
          break
      }
}
GenerateAllSitecollectionsCountInWebapplication -Url "Web application URL"