PHP - FOREACH MIN PRICE

<?php

$data='{"symbol":"EOSUSDT","orderId":432604059,"orderListId":-1,"clientOrderId":"vlv3kfY3ePzQHJ3scNOWkM","transactTime":1580211443849,"price":"0.00000000","origQty":"6.09000000","executedQty":"6.09000000","cummulativeQuoteQty":"24.88069500","status":"FILLED","timeInForce":"GTC","type":"MARKET","side":"SELL","fills":[{"price":"4.08550000","qty":"6.09000000","commission":"0.02488070","commissionAsset":"USDT","tradeId":39095585},{"price":"4.18550000","qty":"6.09000000","commission":"0.02488070","commissionAsset":"USDT","tradeId":39095585},{"price":"4.48550000","qty":"6.09000000","commission":"0.02488070","commissionAsset":"USDT","tradeId":39095585}]}';

$array = json_decode($data, true); //decodifica json data

echo '<pre>',print_r($array),'</pre>';


echo $array["symbol"]." - ".$array["orderId"]." - ".$array["clientOrderId"]." - ".$array["transactTime"]." - ".$array["price"]." - ".$array["origQty"]." - ".$array["executedQty"]." - ".$array["cummulativeQuoteQty"]." - ".$array["status"]." - ".$array["side"].PHP_EOL;





if($array["fills"] !='null'){

echo "pieno".PHP_EOL;

}else{

echo "vuoto".PHP_EOL;

}



/*
$n= 0 ;
 foreach($array["fills"] as $fill){

  $posnum = "00000000";



//UPDATE SQL


echo $n."   ".$fill['price']." - ".$fill['qty']." - ".$fill['commission']." - ".$fill['commissionAsset']." - ".$fill['tradeId']." - ".$posnum.PHP_EOL;


$n++;

}
*/

foreach($array["fills"] as $fill){

   $priceprod[] = $fill['price'];

}

 $min = min($priceprod);
 echo $min;