function build_query($q){
 $params=array(); // All parameters are added here and
  // remove tags
 $this->q=substr(trim(strip_tags($q),0,80));
 // Basic parameters
 $params['use']='myIndex';   // Index used
 $params['qt']='search';       // Query template used
 // Collapsing
 $params['collapse.mode']='cluster';
 $params['collapse.field']='host';
 $params['collapse.max']=1;
 // Pagination
 if(isset($_GET['page'])) $params['start']=((int) $_GET['page']*10)-9;
  else $params['start']=1;
 $params['rows']=$this->rpp;
 $params['query']=trim($q);     // The search key itself
 $params['sort']='score'; // Use a minus allowance 
 // sign for reverse order
 $host='http://127.0.0.1:8080/select'; // URL of the OSS host
 // In case somebody injected a "Delete" parameter:
 unset($params['delete']);
 $this->query=$host.'?'.http_build_query
($params);
}