如何排序并从数组中获取最小值和最大值？

Question

我得到了2个阵列

//each array contains 8 values 
$ids = Array(1441, 1313, 1123, 1316, 1313, 1313, 1123, 1567); 
//each id has a value in $data array 
$data = Array(2, 3, 8, 4, 5, 4, 2, 9); 


//here is my problem: 

$max_data = array_product($data); //but not all values from $data only these: 
$ids = [1441,1123,1316,1313,1567]; //these are the ids with highest data. 
echo $max_data; //result must be 2880 (2 * 8 * 4 * 5 * 9) 
$min_data = array_product($data); //and now 
$ids = [1441,1313,1316,1123,1567]; //these are the ids with lowest data. 
echo $max_data; //result must be 432 (2 * 3 * 4 * 2 * 9) 

我希望，我能解释我的问题。

谢谢。

---

解决了它。

我已经取得了最大和最小的功能。我想获得更好的答案，谢谢！

<?php 

$ids = Array(1441, 1313, 1123, 1316, 1313, 1313, 1123, 1567);   
$data = Array(2, 3, 8, 4, 5, 4, 2, 9); 

function getMaxData($ids, $data) 
{ 
    (int)$_total = 1; 
    array_multisort($ids, $data, SORT_DESC); 

    foreach(array_unique($ids) as $key => $value) 
     $_total *= $data[$key]; 

    return $_total; 
} 

function getMinData($ids, $data) 
{ 
    (int)$_total = 1; 
    array_multisort($ids, $data, SORT_ASC); 

    foreach(array_unique($ids) as $key => $value) 
     $_total *= $data[$key]; 

    return $_total; 
} 

echo "Max: ".getMaxData($ids, $data)."<br />"; 
echo "Min: ".getMinData($ids, $data)."<br />"; 

?> 

Answer 1

我不知道如果我理解正确的，但不是关联数组，你需要什么？

$foo = Array(2 => 1441, 3 => 1313 ....) 

http://php.net/manual/en/language.types.array.php