Question

我有以下数组uid。我想基于Array ( [0] => Array ( [id] => 1 [pid] => 121 [uid] => 1 ) [1] => Array ( [id] => 2 [pid] => 13 [uid] => 1 ) [2] => Array ( [id] => 5 [pid] => 121 [uid] => 1 ) )创建最终数组。如果uid在循环中相同，则会连接值。

 Array ( 
[0] => Array ( 
    [id] => 1,2,5 
    [pid] => 121,13,121 
    [uid] => 1  
    ) 
)

我想创建最终数组，如..

foreach

我如何使用foreach($uidValues as $r) { if(in_array($r['uid'],$finalArray)) { $finalArray['id'] .= ','.$r['id']; $finalArray['pid'] .= $r['pid']; $finalArray['uid'] = ','.$r['uid']; } else{ $finalArray[] = array("id" => $r['id'], "pid" => $r['pid'], "uid" => $r['uid']); } }循环来实现它？

我尝试了以下代码..

public aspect Profiler {
      pointcut beforeMethod(): !within(Profiler);
      before(): beforeMethod() { /* Do something */ }
      pointcut afterMethod(): !within(Profiler);
      after(): afterMethod() { /* Do something */}
}

Answer 1

简单地尝试

$result = [];
foreach ($arr as $key => $value) {
    $hash = $value['uid'];
    if (isset($result[$hash])) {
        $result[$hash]['id'] = $result[$hash]['id'] . ',' . $value['id'];
        $result[$hash]['pid'] = $result[$hash]['pid'] . ',' . $value['pid'];
        $result[$hash]['uid'] = $result[$hash]['uid'] . ',' . $value['uid'];
    } else {
        $result[$hash]['id'] = $value['id'];
        $result[$hash]['pid'] = $value['pid'];
        $result[$hash]['uid'] = $value['uid'];
    }
}

print_r(array_values($result));

Demo

Answer 2

$before = array(
    '0' => array(
        'id'  => 1,
        'pid' => 121,
        'uid' => 1,
    ),
    '1' => array(
        'id'  => 2,
        'pid' => 13,
        'uid' => 1,
    ),
    '2' => array(
        'id'  => 5,
        'pid' => 121,
        'uid' => 1,
    ),
);

$after = array();
foreach ($before as $row) {
    if (array_key_exists($row['uid'], $after)) {
        $after[$row['uid']]['id'] .= ',';
        $after[$row['uid']]['pid'] .= ',';
    } else {
        $after[$row['uid']]['uid'] = $row['uid'];
    }

    $after[$row['uid']]['id'] .= $row['id'];
    $after[$row['uid']]['pid'] .= $row['pid'];
}

然后，您可以删除数组键以获得完全相同的数组：

$after = array_values($after);

<强>输出：

array (
  0 => 
  array (
    'uid' => 1,
    'id' => '1,2,5',
    'pid' => '121,13,121',
  ),
)

Answer 3

正如@b0s3在评论中所说：使用uid作为新数组的关键。

foreach($uidValues as $item) {

        $result[$item['uid']]['pid'][]  = $item['pid'];
        $result[$item['uid']]['id'][]   = $item['id'];

}

<强>输出：

Array
(
    [1] => Array
        (
            [pid] => Array
                (
                    [0] => 121
                    [1] => 13
                    [2] => 121
                )

            [id] => Array
                (
                    [0] => 1
                    [1] => 2
                    [2] => 5
                )

        )

)

基于一个唯一值创建数组

3 个答案: