ใช้ appserv อยู่ ต้องการใช้คำสั่ง sqlsrv เพื่อ connect Ms SQL Server 2012 ต้องทำยังไงครับ

<?php

   $serverName = "tcp:localhost,1433";
   $userName = 'sa';
   $userPassword = 'password';
   $dbName = "thaicreate-db";
  
   $connectionInfo = array("Database"=>$dbName, "UID"=>$userName, "PWD"=>$userPassword, "MultipleActiveResultSets"=>true);

   sqlsrv_configure('WarningsReturnAsErrors', 0);
   $conn = sqlsrv_connect( $serverName, $connectionInfo);

   $strSQL = "SELECT * FROM customer";
   $stmt = sqlsrv_query($conn, $strSQL);

?>
<table width="600" border="1">
  <tr>
    <th width="91"> <div align="center">CustomerID </div></th>
    <th width="98"> <div align="center">Name </div></th>
    <th width="198"> <div align="center">Email </div></th>
    <th width="97"> <div align="center">CountryCode </div></th>
    <th width="59"> <div align="center">Budget </div></th>
    <th width="71"> <div align="center">Used </div></th>
  </tr>
<?php
while($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC))
{
?>
  <tr>
    <td><div align="center"><?=$row["CustomerID"];?></div></td>
    <td><?=$row["Name"];?></td>
    <td><?=$row["Email"];?></td>
    <td><div align="center"><?=$row["CountryCode"];?></div></td>
    <td align="right"><?=$row["Budget"];?></td>
    <td align="right"><?=$row["Used"];?></td>
  </tr>
<?
}
?>
</table>
<?php
sqlsrv_close($conn);
?>