original_string: function array_sum_interval($array_external, $interval){
  
          $n_interval=explode(":", $interval);
          $sum = 0;
          for($i=$n_interval[0]; $i < ($n_interval[1]+1) ; $i++){
              $sum += $array_external[$i];
          }
          return $sum;
  
      }
code: function array_sum_interval($array_external, $interval){
  
          $n_interval=explode(":", $interval);
          $sum = 0;
          for($i=$n_interval[0]; $i < ($n_interval[1]+1) ; $i++){
              $sum += $array_external[$i];
          }
          return $sum;
  
      }
code_tokens: function array_sum_interval ( $ array_external , $ interval ) { $ n_interval = explode ( ":" , $ interval ) ; $ sum = 0 ; for ( $ i = $ n_interval [ 0 ] ; $ i < ( $ n_interval [ 1 ] + 1 ) ; $ i ++ ) { $ sum += $ array_external [ $ i ] ; } return $ sum ; }
docstring: Function for sum intervals of an array
docstring_tokens: Function for sum intervals of an array