使用 一个快速的方法array_reduce 看起来像：

  $ =独特array_reduce（$主题，功能（$最终，$文章）{
    静态$见过=阵列（）;
    如果（！array_key_exists（$文章['fk_article_id']，$可见））{
        $见过[$文章['fk_article_id'] = NULL;
        $最后的[] = $物品;
    }
    返回$决赛;
}）;
 

尝试工作的例子。

---

编辑：看来你不想要的结果汇总工作。这里有另外​​两个想法：

过滤在PHP

  $ =可见阵列（）;
而（$行= pg_fetch_assoc（$ authors_result））{
    //跳过此行，如果我们已经看到它的文章编号
    如果（array_key_exists（$行['fk_article_id']，$见过））{
        继续;
    }
    //请注意，我们已经看到了这篇文章
    $见过[$行['fk_article_id'] = NULL;
    //做任何你行
    后续代码var_dump（$行）;
}
 

过滤在DB

这里的想法是要改变正在执行的查询，使得重复文章id不一定在结果集中出现。如何做到这一点将取决于您已经使用查询。

I have an array that looks just like that:

array(3) { ["fk_article_id"]=> string(1) "4" ["first_name"]=> string(6) "Ulrike" ["last_name"]=> string(10) "Grasberger" }

array(3) { ["fk_article_id"]=> string(1) "9" ["first_name"]=> string(5) "Frank" ["last_name"]=> string(9) "Neubacher" }

array(3) { ["fk_article_id"]=> string(3) "896" ["first_name"]=> string(2) "D." ["last_name"]=> string(5) "Bauer" }

array(3) { ["fk_article_id"]=> string(3) "896" ["first_name"]=> string(2) "S." ["last_name"]=> string(6) "Anders" }

array(3) { ["fk_article_id"]=> string(3) "896" ["first_name"]=> string(2) "M." ["last_name"]=> string(6) "Tsokos" }

array(3) { ["fk_article_id"]=> string(3) "897" ["first_name"]=> string(8) "Reinhard" ["last_name"]=> string(8) "Scholzen" }

Now what I want to do is to get rid of the duplicate "fk_article_id" values "896", so that only the first of those is left:

array(3) { ["fk_article_id"]=> string(3) "896" ["first_name"]=> string(2) "D." ["last_name"]=> string(5) "Bauer" }

I now array_unique() but I haven't found a possibility to tell the function to only use the values in the "fk_article_id" ID.

How can I do this?

Edit:

It's the output of a three column db table via:

$authors_result = pg_query($query_authors) or trigger_error("An error occurred.<br/>" . mysql_error() . "<br />SQL-Statements: {$searchSQL}");

while ($row = pg_fetch_assoc($authors_result)) {
var_dump($row);
}

A quick way using array_reduce would look like:

$unique = array_reduce($subject, function($final, $article){
    static $seen = array();
    if ( ! array_key_exists($article['fk_article_id'], $seen)) {
        $seen[$article['fk_article_id']] = NULL;
        $final[] = $article;
    }
    return $final;
});

Try a working example.

---

Edit: Seems you don't want to work with the aggregated results. Here are two other thoughts:

Filtering in PHP

$seen = array();
while ($row = pg_fetch_assoc($authors_result)) {
    // Skip this row if we have already seen its article id
    if (array_key_exists($row['fk_article_id'], $seen)) {
        continue;
    }
    // Note that we have seen this article
    $seen[$row['fk_article_id']] = NULL;
    // Do whatever with your row
    var_dump($row);
}

Filtering in the DB

The idea here is to change the query being executed so that the repeated article ids do not appear in the result set. How this is done will depend on the query that you're already using.