使用 PHP 与 2 个 foreach 循环中的数组进行比较时如何获取迭代计数

Question

我有 2 个数组，我想计算它们的总票数。数组一是用户提案，数组二是用户对提案的投票。我正在尝试比较 2 并计算每个提案的总票数。

这是 2 个数组 -

$props = json_decode('[{"proposal":"proposal 1", "owner":"tom", "lock_time":1639440607},{"proposal":"proposal 2", "owner":"bob", "lock_time":1639455554}]', true);

$votes = json_decode('[{"vote":"approve", "owner":"tom", "prop-id":1639440607},{"vote":"reject", "owner":"bob", "prop-id":1639455554},{"vote":"reject", "owner":"tom", "prop-id":1639440607}]', true);

想要的输出如下-

Proposal 1 = 1 Approve and 1 Reject
Proposal 2 = 0 Approve and 1 Reject

我得到的输出是-

Proposal 1 = 1 Approve and 1 Reject
Proposal 2 = 1 Approve and 1 Reject

这是我的尝试，但未提供所需的输出 -

foreach($props as $props){

    $lock_time = $props['lock_time'];
    $my_proposal = $props['proposal'];

    foreach($votes as $votes){

        $id = $votes['prop-id'];
        $vote = $votes['vote'];

        if($lock_time == $id){
           if($vote == 'approve'){
               $yay++;
           }elseif($vote == 'reject'){
               $nay++;
           }
        }
    }

    echo 'Proposal: '.$my_proposal.'<br>';
    echo 'yay:: '.$yay.'<br>';
    echo 'nay:: '.$nay.'<br>';
    echo '<br><br>';

 }

这是我的演示 - http://sandbox.onlinephpfunctions.com/code/abea2fa828c067ce3efc1440af201fce839645b6

Answer 1

在这个街区 if($vote == 'approve'){ $yay++; }elseif($vote == 'reject'){ $nay++;}

您需要为每个提案重置值，因此可能会像这样：

foreach($props as $props){

    $lock_time = $props['lock_time'];
    $my_proposal = $props['proposal'];
    $yay=0;
    $nay=0;
    foreach($votes as $vote){

        $id = $vote['prop-id'];
        $theVote = $vote['vote'];

        if($lock_time == $id){
            if($theVote == 'approve'){
                $yay++;
            }elseif($theVote == 'reject'){
                $nay++;
            }

        }
    }
    
    echo 'Proposal: '.$my_proposal.PHP_EOL;
    echo 'yay:: '.$yay.PHP_EOL;
    echo 'nay:: '.$nay.PHP_EOL;
    echo PHP_EOL;
}

使用 PHP 与 2 个 foreach 循环中的数组进行比较时如何获取迭代计数

How to get iteration count when comparing to arrays in 2 foreach loops using PHP

php

arrays

comparison

foreach

loops