Question

在经历类似的问题之后，我无法找到符合我的情景。我有$ artists_temp数组，如

Array
(
    [0] => Array
        (
            [ID] => 109
            [post_title] => Junoon
        )

    [1] => Array
        (
            [ID] => 135
            [post_title] => Linkin Park
        )

)

我已经完成了代码来使数组像

Array
(
    [109] => Junoon
    [Junoon] => 
    [135] => Linkin Park
    [Linkin Park] => 
)

需要的是

Array
(
    [109] => Junoon
    [135] => Linkin Park
)

这是代码

$artists_temp = $wpdb->get_results($query, ARRAY_A);
$artists = array();
foreach ($artists_temp as $key => $value) {
    foreach ($value as $k => $v) {
        $artists[$v] = next($value);
        //unset(next($value)) This doesn't work.
    }
}
print_r($artists);

Answer 1

{p <1}}需要

PHP＆gt; = 5.5.0或使用PHP Implementation of array_column()：

array_column()

由于您使用的是WordPress，请查看：wp_list_pluck()：

$artists = array_column($artists_temp, 'post_title', 'ID');

Answer 2

您也可以

$artists = array();

foreach ($artists_temp as $array) {
    $artists[$array['ID']] = $array['post_title'];
}

将多维数组转换为单维数组php

2 个答案: