$tsql = "INSERT INTO [table]
      (
         [data1],
        [data2]
      )  
      VALUES   
      (?, ?)";  
while( $row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC ) ) 
{
      $tparams = [
          $row['tdata1'],
          $row['tdata2']->format( 'Y-d-m H:i:s' )
     ];

    $tstmt = sqlsrv_prepare($conn, $tsql, $tparams);
    sqlsrv_execute($tstmt); 
    sqlsrv_free_stmt($tstmt);  
}

$tsql = "INSERT INTO `table`
      (
         `data1`,
        `data2`
      )  
      VALUES   
      (?, ?)";  

$stmt = $mysqli->prepare($tsql)

while( $row = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_ASSOC ) ) 
{
        $tparams = [
            $row['tdata1'],
            $row['tdata2']->format( 'Y-d-m H:i:s' )
        ];

       $stmt->bind_param("ss",  $tparams);
}
 
$stmt->execute();