I have an array 
$this->sbx[mch]
wich print_r function give me back so in this way:

Array
(
    [0] => ~*
)


so I have one element. I have a function

give_string($i){
  $value = $this->sbx[mch][$i];
  return ($value);
}

that returns back only values from the second one ( [1], [2] ecc.)
I had to solve this way
function give_string($i){
 if ($i == 0 ){
      $t = each ($this->sbx[mch]);
      $value = $t["value"];
      reset($this->sbx[mch]);
    }
    else {
      $value = $this->sbx[mch][$i];
    }
}

Anyone met this problem?
Thanks and goodbye!