// get tablenames to backup 
  if ($selectedTable) { 
    $tablenames = array( getTableNameWithPrefix($selectedTable) ); 
  } 
  else { 
    $skippedTables = array(); // don't backup these table names 
    $skippedTables = applyFilters('backupDatabase_skippedTables', $skippedTables);  // let users skip tables via plugins 
    $skippedTables = array_map('getTableNameWithPrefix', $skippedTables);           // add table_prefix to all table names (if needed) 
    $allTables     = getMysqlTablesWithPrefix(); 
    $tablenames    = array_diff($allTables, $skippedTables);                        // remove skipped tables from list 
  } 
 
  // backup database

<?php 
/* 
Plugin Name: Backup Skip Tables 
Description: Exclude some tables from the backup 
Version: 1.00 
Requires at least: 2.00 
Required System Plugin: Yes 
*/ 
 
addFilter('backupDatabase_skippedTables', 'skipTheseTables', null, 1); 
 
function skipTheseTables($skippedTables) { 
  $skippedTables[] = 'news2'; 
  $skippedTables[] = 'something'; // copy this line for each table you want to skip 
  return $skippedTables; 
}

  foreach ($tablenames as $unescapedTablename) { 
	   
	  if($unescapedTablename == 'cms_MYTABLENAME') 
	  { 
		  continue; 
	  }

  // get tablenames to backup 
  $tablenames = getMysqlTablesWithPrefix(); 
  if ($selectedTable) { 
    $tablenames = array( getTableNameWithPrefix($selectedTable) ); 
  } 
 
  // backup database