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我在调用 php 数组中的正确值时遇到了一些麻烦。这是数组。

Array ( [count] => 1 [threads] => Array ( [13] => Array ( [thread_id] => 13 [node_id] => 4 [title] => Forum Integration nearly complete! [reply_count] => 0 [view_count] => 0 [user_id] => 59 [username] => Faeron [post_date] => 1369257302 [sticky] => 0 [discussion_state] => visible [discussion_open] => 1 [discussion_type] => [first_post_id] => 23 [first_post_likes] => 0 [last_post_date] => 1369257302 [last_post_id] => 23 [last_post_user_id] => 59 [last_post_username] => Faeron [prefix_id] => 1 [content] => Array ( [count] => 1 [content] => Array ( [23] => Array ( [post_id] => 23 [thread_id] => 13 [user_id] => 59 [username] => Faeron [post_date] => 1369257302 [message] => It's been quite a while since we began to integrate the phanime Forums with the main site. We have now finished the integration with the phanime Forums and the main site. You will no longer notice that there are two platforms running phanime, but instead only one. Our next step is to theme the forums to make it look like the main site! [ip_id] => 268 [message_state] => visible [attach_count] => 0 [position] => 0 [likes] => 0 [like_users] => a:0:{} [warning_id] => 0 [warning_message] => ) ) ) ) ) )

现在假设这个数组被命名$array为获取第一个元素的值“[count]”，我不能只说以下内容：print $array["[count]"] <-- 这会返回一个错误。

那么作为数组本身具有值的元素呢，即[threads]元素。我如何获得，也许是[thread_id]元素的价值？

4

2 回答 2

1

像这样使用它：

echo $array['count']; // would output '1'
echo $array['threads'][13]['thread_id']; // outputs '13'
echo $array['threads'][13]['content']['content'][23]['message']; // "It's been.."

这是关于多维数组的（简要）文档：http: //php.net/manual/en/language.types.array.php#language.types.array.syntax.accessing

这里有一个很好的例子指导他们：http: //www.developerdrive.com/2012/01/php-arrays-array-functions-and-multidimensional-arrays/

更新：要在事先不知道编号数组键的情况下获取“消息”的值，您可以使用：

reset($array);
$first = array_keys($array['threads']);
$first = $first[0];
$second = array_keys($array['threads'][$first]['content']['content']);
$second = $second[0];
echo $array['threads'][$first]['content']['content'][$second]['message'];
于 2013-05-22T22:25:37.257 回答
0

您可以使用以下命令访问数组中的值：

echo $array['count'];

您还可以像这样打印整个数组：

print_r($array);

或者

var_dump($array);

如果要从多维数组中写入值，请使用以下命令：

echo $array[23]['post_id'];

因此，总而言之，请参见以下内容：

$array = array(
    'bar'  => 'testing value',
    'foo'  => array(
         'bar' => 'test'
    )
);

print_r($array) // Will print whole array
echo $array['bar']; // Will print 'testing value'
print_r($array['foo']); // Will print the second level array
echo $array['foo']['bar']; // Will print 'test'
于 2013-05-22T22:15:29.083 回答