mssql 프랜잭션 처리

function mssql_begin_transaction() {
  mssql_query("BEGIN TRANSACTION");
}

function mssql_commit() {
  mssql_query("COMMIT");
}

function mssql_rollback() {
  mssql_query("ROLLBACK");
}

function mssql_insert_id() {
  $id = "";

  $rs = mssql_query("SELECT @@identity AS id");
  if ($row = mssql_fetch_row($rs)) {
    $id = trim($row[0]);
  }
  mssql_free_result($rs);

  return $id;
}