将多维数组的键和值都插入mysql表

Question

我有一个看起来像这样的数组

Array
(
    [0] => Array
        (
            [post_id] => 5410
            [Issue] => 201
            [volume] => 2
            [pages] => 105-9
            [authors] => Onger, M., Jaluth, K.
            [publication_date] => 17 January 2016
            [journals] => Nature Medicine
            [link_to_pubmed] => http://www.ncbi.nlm.nih.gov/pubmed/1
        )
    [1] => Array
        (
            [post_id] => 5411
            [Issue] => 301
            [volume] => 7
            [pages] => 32-9
            [authors] => Onger, M., Jaluth, K.
            [publication_date] => March 30
            [journals] => Lancet
            [link_to_pubmed] => http://www.ncbi.nlm.nih.gov/pubmed/2
        )
        )

我整天都在绞尽脑汁想弄清楚如何插入键和值来获得看起来像这样的东西

+---------+---------+-------------------+-----------------------+
| meta_id | post_id | meta_key          | meta_value            |
+---------+---------+-------------------+-----------------------+
|  190143 |    5410 |Issue              | 201                   |
|  190141 |    5410 |volume             | 2                     |
|  190140 |    5410 |pages              | 105-109               |
|  190139 |    5410 |authors            | Onger, M., Jaluth, K. |
|  190144 |    5410 |publication_date   | 17 January 2016       |
|  190136 |    5410 |journals           | Nature Medicine       |
|  190135 |    5410 |link_to_pubmed     |                       |
|         |         |                   |                       |
+---------+---------+-------------------+-----------------------+

我使用的代码与here 描述的代码非常相似，如下所示

    $metadata = implode(', ', array_shift($publications));
foreach($publications as $publication){
    foreach ($publication as $key => $metadata){
        $key = array_keys($publication);
        //$publication[$key];
        }
 $new_metadata[] = "(" . implode(', ', $publication) . ")";

}   

如何获取键和值？

Answer 1

如果meta_id是一个自增字段，那么

foreach($publications as $publication) {
    // Get post_id and remive it from array
    $post_id = $publication['post_id'];
    unset($publication['post_id']);
    foreach ($publication as $key => $metadata) {
       // Below a query. I only print it, you need to execute it
       echo $query = 'insert into table (post_id, meta_key, meta_value) 
                      values ($post_id, "' . $key . '",  "' . $metadata . '")';
        }
}   

Answer 2

你不能用 1 个查询来做到这一点。 您必须运行数组的循环，并在每一行中运行 INSERT mysql。