用PHP将数组组织成嵌套数组

有人知道如何转换这个吗

$events = array(
array("type" => "off-site", "title" => "aaa", "nid" => "11"),
array("type" => "off-site", "title" => "bbb", "nid" => "22"),
array("type" => "installation", "title" => "ccc", "nid" => "33"),
array("type" => "opening", "title" => "ddd", "nid" => "44"),
array("type" => "opening", "title" => "eee", "nid" => "55"),
array("type" => "opening", "title" => "fff", "nid" => "66")
);

进入这个

$events_processed = array(
"off-site" => array(
        array(
            "title" => "aaa",
            "nid" => "11"
        ),
        array(
            "title" => "bbb",
            "nid" => "22"
        )
),
"installation" => array(
        array(
            "title" => "ccc",
            "nid" => "33"
        )
),
"opening" => array(
        array(
            "title" => "ddd",
            "nid" => "44"
        ),
        array(
            "title" => "eee",
            "nid" => "55"
        ),
        array(
            "title" => "fff",
            "nid" => "66"
        )
)
);

使用php

我已经尝试过从不同的帖子中应用不同的方法，但没有成功。

---

我需要嵌套数组，这样我就可以按“类型”对数组重新排序。您好，只需循环并重新组织

$result = array();
foreach($events as $event){
    $key = $event['type'];
    unset($event['type']);
    $result[$key][] = $event;
}

print_r($result);

以下是我所做的：

$array_processed = array();
foreach( $events as $evt){
    $array_processed[$evt['type']][] = array('title'=>$evt['title'], 'nid'=>$evt['nid']);
}

print_r($array_processed);

---

您可以输入下面的代码，请注意，您当前的输出无效，因为您错过了数组索引

例1

    $events_processed = array();
    foreach($events as $options)
    {
        $events_processed[$options['type']][] = array("title"=>$options['title'],"nid"=>$options['nid']);
    }
    var_dump($events_processed);

或

示例2（@dleiftah建议）

两个结果都是这样的，但第二个更灵活

        array
          'off-site' => 
            array
              0 => 
                array
                  'title' => string 'aaa' (length=3)
                  'nid' => string '11' (length=2)
              1 => 
                array
                  'title' => string 'bbb' (length=3)
                  'nid' => string '22' (length=2)
          'installation' => 
            array
              0 => 
                array
                  'title' => string 'ccc' (length=3)
                  'nid' => string '33' (length=2)
          'opening' => 
            array
              0 => 
                array
                  'title' => string 'ddd' (length=3)
                  'nid' => string '44' (length=2)
              1 => 
                array
                  'title' => string 'eee' (length=3)
                  'nid' => string '55' (length=2)
              2 => 
                array
                  'title' => string 'fff' (length=3)
                  'nid' => string '66' (length=2)

---

没有内置的函数可以做到这一点。您必须循环此数组并创建一个新数组

$events=array(contents-of-array);
$proc_events=array(
    'off-site' => array(),
    'installation' => array(),
    'opening' => array()
);
foreach($events as $key => $value)
{
    switch($value['type'])
    {
        case 'off-site':
        $proc_events['offsite']=array('title' => $value['title'], 'nid' => $value['nid']);
        break;

        case 'installation':
        $proc_events['installation']=array('title' => $value['title'], 'nid' => $value['nid']);
        break;

        case 'opening':
        $proc_events['opening']=array('title' => $value['title'], 'nid' => $value['nid']);
        break;
    }
}

---

上述方法应该有效。

执行此操作的最短代码应该是：

foreach ($events as $event)
    $events_processed[$event['type']][] = array('title' => $event['title'], 'nid' => $event['nid']);

---

以下是我能够做到的：

<?php
$events = array(
    array("type" => "off-site", "title" => "aaa", "nid" => "11"),
    array("type" => "off-site", "title" => "bbb", "nid" => "22"),
    array("type" => "installation", "title" => "ccc", "nid" => "33"),
    array("type" => "opening", "title" => "ddd", "nid" => "44"),
    array("type" => "opening", "title" => "eee", "nid" => "55"),
    array("type" => "opening", "title" => "fff", "nid" => "66")
);

foreach ($events as $event) {
    $events_processed[$event['type']][] = array('title' => $event['title'],
                                   'nid' => $event['nid']
    );
}
echo '<pre>';
print_r($events_processed);
?>

---

你试过使用吗？或者只是在数组中循环可能更容易。但是，如果事件数组中添加了更多信息，则必须修改此代码以保留它…我同意@dleiftah需要修改。。。已更新替代方案的应答器

<?php
$events = array(
    array("type" => "off-site", "title" => "aaa", "nid" => "11"),
    array("type" => "off-site", "title" => "bbb", "nid" => "22"),
    array("type" => "installation", "title" => "ccc", "nid" => "33"),
    array("type" => "opening", "title" => "ddd", "nid" => "44"),
    array("type" => "opening", "title" => "eee", "nid" => "55"),
    array("type" => "opening", "title" => "fff", "nid" => "66")
);

foreach ($events as $event) {
    $events_processed[$event['type']][] = array('title' => $event['title'],
                                   'nid' => $event['nid']
    );
}
echo '<pre>';
print_r($events_processed);
?>

Array
(
    [off-site] => Array
        (
            [0] => Array
                (
                    [title] => aaa
                    [nid] => 11
                )

            [1] => Array
                (
                    [title] => bbb
                    [nid] => 22
                )

        )

    [installation] => Array
        (
            [0] => Array
                (
                    [title] => ccc
                    [nid] => 33
                )

        )

    [opening] => Array
        (
            [0] => Array
                (
                    [title] => ddd
                    [nid] => 44
                )

            [1] => Array
                (
                    [title] => eee
                    [nid] => 55
                )

            [2] => Array
                (
                    [title] => fff
                    [nid] => 66
                )

        )

)