FoxyShop Price Range Function

//Get High and Low Price
function my_high_low_price($product) {

    //Set Starter Prices
    $originalprice = $product['originalprice'];
    $lowprice = $product['originalprice'];
    $highprice = $product['originalprice'];

    foreach ($product['variations'] as $product_variation) {
        $variations = preg_split("[\r\n|\r|\n]", $product_variation['value']);
        foreach($variations as $val) {
            if (strpos($val,"{") === false) continue;
            $variation_modifiers = substr($val, strpos($val,"{")+1, strpos($val,"}") - (strpos($val,"{")+1));
            $arr_variation_modifiers = explode("|",$variation_modifiers);
            $pricechange = "";
            $priceset = "";
            foreach ($arr_variation_modifiers as $individual_modifier) {
                $individual_modifier = trim($individual_modifier);
                if (strtolower(substr($individual_modifier,0,2)) == "p:") {
                    $priceset = substr($individual_modifier,2);
                } elseif (strtolower(substr($individual_modifier,0,1)) == "p") {
                    $pricechange = substr($individual_modifier,1);
                }
            }

            if ($pricechange != "") {
                $newprice = $originalprice + $pricechange;
            } elseif ($priceset != "") {
                $newprice = $priceset;
            } else {
                $newprice = $originalprice;
            }
            if ($newprice && $newprice > $highprice) $highprice = $newprice;
            if ($newprice && $newprice < $lowprice) $lowprice = $newprice;
        }
    }

    //Show Price (and sale if applicable)
    if ($lowprice != $highprice) {
        $write = '<div class="foxyshop_price">';
        $write .= foxyshop_currency($lowprice) . " - " . foxyshop_currency($highprice);
        $write .= '</div>';
    } else {
        $write = foxyshop_price(0, 0);
    }

    return $write;
}