Question

我有用PHP编写的这种数组。

$array[] = ["name"=>"KIT", "v1"=>"val1", "v2"=>"val2", "v3"=>"val3"]; 
$array[] = ["name"=>"BAT", "v1"=>"val1", "v2"=>"val2", "v3"=>"val3"]; 
$array[] = ["name"=>"ISL", "v1"=>"val1", "v2"=>"val1", "v3"=>"val1"]; 
$array[] = ["name"=>"KIT", "v1"=>"val4", "v2"=>"val2", "v3"=>"val2"]; 
$array[] = ["name"=>"BAT", "v1"=>"val1", "v2"=>"val2", "v3"=>"val1"]; 
$array[] = ["name"=>"ENS", "v1"=>"val1", "v2"=>"val2", "v3"=>"val3"]; 
$array[] = ["name"=>"ENS", "v1"=>"val3", "v2"=>"val2", "v3"=>"val1"];

我想将它们分组，以便输出为

BAT val1 val2 val3
    val1 val2 val1
ENS val1 val2 val3
    val3 val2 val1
ISL val1 val1 val1
KIT val1 val2 val3
    val4 val2 val2

我尝试ksort()但不起作用：

$group_arr = [];
    foreach ($array as $key => $value) {
        $group_arr[$value["name"]][$key] = $value;
    }

Answer 1

您应该尝试：

sudo nano /etc/hosts

无需使用127.0.0.1。注意foreach ($array as $value) { $v = $value; unset($v['name']); $group_arr[$value["name"]][] = $v; }的键只是整数，结果数组中不需要它们

Answer 2

您需要创建一个嵌套循环。
为了不将名称添加到新数组中，我将其提取并使用array_slice使其不嵌套在foreach中。

foreach ($array as $value) {
    $name = $value["name"];
    foreach(array_slice($value,1) as $val){
        $group_arr[$name][] = $val;
    }
}
var_dump($group_arr);

输出：

array(4) {
  ["KIT"]=>
  array(6) {
    [0]=>
    string(4) "val1"
    [1]=>
    string(4) "val2"
    [2]=>
    string(4) "val3"
    [3]=>
    string(4) "val4"
    [4]=>
    string(4) "val2"
    [5]=>
    string(4) "val2"
  }
  ["BAT"]=>
  array(6) {
    [0]=>
    string(4) "val1"
    [1]=>
    string(4) "val2"
    [2]=>
    string(4) "val3"
    [3]=>
    string(4) "val1"
    [4]=>
    string(4) "val2"
    [5]=>
    string(4) "val1"
  }
  ["ISL"]=>
  array(3) {
    [0]=>
    string(4) "val1"
    [1]=>
    string(4) "val1"
    [2]=>
    string(4) "val1"
  }
  ["ENS"]=>
  array(6) {
    [0]=>
    string(4) "val1"
    [1]=>
    string(4) "val2"
    [2]=>
    string(4) "val3"
    [3]=>
    string(4) "val3"
    [4]=>
    string(4) "val2"
    [5]=>
    string(4) "val1"
  }
}

https://3v4l.org/ebuFt

php组按字排列的多维数组

2 个答案: