code: public function setMatchModeByModeName($modeName)
      {
          $modes = [
              'all'       => 0,
              'any'       => 1,
              'phrase'    => 2,
              'boolean'   => 3,
              'extended'  => 4,
              'fullscan'  => 5,
          ];
  
          if (array_key_exists($modeName, $modes)) {
              $mode = $modes[$modeName];
              $this->SetMatchMode($mode);
          } else {
              throw new \LogicException('Wrong Mode');
          }
      }
docs: Uso amigavel da definicao de Match Mode.
  
  @param string $modeName all|any|phrase|boolean