Connect php to MS SQL-Server Database

MS-SQL , php ,

<?php

          $serverName = "host"; 

          $dbname="db_name";

          $user="user_name";

          $pswrd="password";

          $connectionInfo = array( "Database"=>$dbname, "UID"=>$user, "PWD"=>$pswrd);

          $conn = sqlsrv_connect( $serverName, $connectionInfo);

          if( $conn === false ) {

               die( print_r( sqlsrv_errors(), true));

          }else{

               echo "Connection established";

          }

     

?>