This is a bug report and, i think, also a solution report. If u use the canonical syntax to retrieve table names from a Microsoft Access ODBC connection on windows 2K (dunno if this happen with previous versions) using ZEND PHP 4.0.6 engine, you will see your page to fall in a deep endless loop without waking up. The workaround, that is also a good coding practice, is to close all you left open: so use odbc_close_all() and your sleepy page turn to wake up without a prob!
Here it is my piece of code to accomplish the whole job:

<script language="php">
//
// ODBC database table names retrieve with odbc_tables()
//
  error_reporting (E_ALL);
  
  $the_connection="test";
  $ODBCConn=odbc_connect($the_connection, "", "",SQL_CUR_USE_ODBC) or die("DSN error!");

  $i=0;
  $recordset=odbc_tables($ODBCConn);
  while(odbc_fetch_row($recordset))
  {
    // In MSAccess the first 5 tables are used by the application and we don't care of them
    if (++$i <= 5) echo ":: SYSTEM TABLE :: ";
    echo odbc_result($recordset, "TABLE_NAME")."<br>\n";
  }

  flush(); // this is merely optional
  odbc_close_all(); // don't forget this!!!
</script>