Question

我在WP中存储了post_meta_key。值是一个数组。

我做了一个get_post_meta - which returns an empty array the first time。 $single设置为false。这个数组称为$voters，因为它存储了一个选民列表。关键是用户id，值是一个数组，接下来描述。

然后我遍历输入，清理它们，并创建另一个名为current_vote的key =＆gt;值数组。这是为用户标识密钥设置的值。

我想将current_vote作为值插入到投手数组中。现在，我正在尝试这个：

$voters[$voter_id] = $current_vote;

这可以从$voter_id正确创建一个密钥，并将current_vote数组作为值。

BUT！当第二次投票进来时，它不只是在现有数组中插入另一个键 - 它需要第一次投票，并将其插入新数组！

第一次投票如下：

    Array
           (
    [13] => Array
        (
            [13] => 0
            [15] => 75
            [21] => 0
            [34] => 0
            [16] => 0
            [50] => 0
            [28] => 0
            [45] => 0
            [10] => 0
            [40] => 0
            [41] => 0
            [52] => 0
            [22] => 0
            [29] => 0
            [23] => 0
            [30] => 0
            [48] => 0
            [53] => 0
            [38] => 0
            [35] => 0
            [61] => 0
            [26] => 0
            [9] => 0
            [62] => 0
            [54] => 0
            [49] => 0
            [14] => 0
            [19] => 0
            [42] => 0
            [55] => 0
            [5] => 0
            [12] => 0
            [46] => 0
            [56] => 0
            [32] => 0
            [36] => 0
            [2] => 0
            [17] => 0
            [4] => 0
            [27] => 0
            [44] => 0
            [25] => 0
            [57] => 0
            [37] => 0
            [3] => 0
            [51] => 0
            [31] => 0
            [43] => 0
            [47] => 0
            [39] => 0
        )
)

第二次投票结束后，看起来像这样：

因此，元素被正确插入（新元素具有键4），但第一个元素被插入到新的数组键0中。

这是我的完整代码：

$quarter = substr($date, 1,1);
$year = substr($date, 2,4);

$voters = get_post_meta(2165, 'bonus_votesq'. $quarter . $year);

//initialize vote arrays and vars
$votes = $_POST['votes'];
$voter_id = $_POST['voter_id'];
$voting_array = array();
$current_vote = array();
parse_str($votes, $voting_array);

foreach ($voting_array as $vid => $awarded_points) {
  $current_vote[sanitize_key($vid)] = sanitize_key($awarded_points); 
}

// push the local array into what will be the global array
$voters[$voter_id] = $current_vote;

//if meta_data doesn't exist, update_post_meta creates one. if it does, it updates it.
update_post_meta(2165,'bonus_votesq'. $quarter . $year, $voters);
echo print_r($voters);

发生了什么事？

Answer 1

您正在获取帖子元数据，并将它们放回到同一个数组$voters上。您应该提前分配$voter_id并在使用post_meta_data之前将其用作密钥，或者使用其他变量来存储它。

如果您的意思是提前使用$voter_id作为密钥，请尝试过：

//initialize vote arrays and vars
$quarter = substr($date, 1,1);
$year = substr($date, 2,4);
$votes = $_POST['votes'];
$voter_id = $_POST['voter_id'];
$voting_array = array();
$current_vote = array();

$voters[$voter_id] = get_post_meta(2165, 'bonus_votesq'. $quarter . $year);

parse_str($votes, $voting_array);

foreach ($voting_array as $vid => $awarded_points) {
    $current_vote[sanitize_key($vid)] = sanitize_key($awarded_points); 
}

// push the local array into what will be the global array
$voters[$voter_id] = $current_vote;

//if meta_data doesn't exist, update_post_meta creates one. if it does, it updates it.
update_post_meta(2165,'bonus_votesq'. $quarter . $year, $voters);
echo print_r($voters);

Answer 2

我明白了！杰森问的问题 - 在get_post_meta让我走上正轨之后，美元选民的样子是什么样的 -

http://codex.wordpress.org/Function_Reference/get_post_meta

如果将$ single设置为false，那么它就是 - get_post_meta返回一个ASSOCIATIVE ARRAY，其中包含我的结果。所以，这就是额外数组的用武之地。因为我在那里插入新的投票，现在它有关联数组和我的新投票。

将元素插入到数组中会创建不需要它们的嵌套数组

2 个答案: