php loop through 2D array

Hello,
I access the following values like this.

    $result->{'HistoricalPricesResult'}->HistoricalPricesResult[0]->Price
    $result->{'HistoricalPricesResult'}->HistoricalPricesResult[0]->Low
    //next row
    $result->{'HistoricalPricesResult'}->HistoricalPricesResult[1]->Price
    $result->{'HistoricalPricesResult'}->HistoricalPricesResult[1]->Low

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However I need to consolidate this to

    
    $values[0][price]
    $values[0][low]
    $values[1][price]
    $values[1][low]

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2 other strange things.  The values are strings and I need them to be decimals(2 decimal points) and also the min and the max for price and low accross all the rows