如何组合这个数组？

I'd like to make a sum of all [Suggested] field. How can I make it please? I use Php.

Array
(
    [0] => Array
        (
            [Id] => 4
            [Suggested] => 1322
            [proximite_r] => 30924.8470655462
        )

    [1] => Array
        (
            [Id] => 7
            [Suggested] => 773
            [proximite_r] => 32229.1036975145
        )
)

Thanks!

You may try this:

$Sum = 0;
foreach ($row as $item) {
   $Sum += $item['Suggested']; // or else index
}
echo $Sum;

$sum = array_sum(
              array_map(function($item) { return $item["Suggested"]; }, $items)
       );

Here you go, buddie: array_reduce() like a boss

// PHP >= 5.3
$sum = array_reduce($items, function($sum, $item){
  return $sum += $item['Suggested'];
}, 0);

// PHP 5.2
function _sum($sum, $item){
  return $sum += $item['Suggested'];
}
$sum = array_reduce($items, '_sum', 0);

Sadly PHP <= 5.2 does not support closures, so you have to define the function separately.

Given the array_column function that will probably arrive in PHP 5.5 :

function array_column($input, $key) {
    if (is_array($key) || !is_array($input)) return array();
    $array = array();
    foreach($input as $v) {
        if(array_key_exists($key, $v)) $array[]=$v[$key];
    }
    return $array;
}

(source: php.net)

You could use this :

$sum = array_sum(array_column($items, 'Suggested'));

Of course, this is major overkill and I only wanted to point out that this is also a way to achieve it.

Another way to iterate through the array is using for loop, Suppose it is $arr:

<?php    
function getSumOfKey($arr, $key){
     $sum = 0;
     for ($i = 0; $i < count($arr); $i++){
      (is_numeric($arr[$i][$key]))? $sum += $arr[$i][$key] : continue;
     }
     return $sum;
    } 
?>

To implement it:

echo 'The sum is: '.getSumOfKey($arr, 'Suggested');