我有这个阵列:

Array
    (
      0 => "3_some val",
      1 => "1_some other val",
      2 => "0_val",
      3 => "2_value",
      4 => "4_other value"
    )

考虑到上面的数组,有没有一种方法可以这样做呢?
Array
    (
      0 => "val",
      1 => "some other val",
      2 => "value",
      3 => "some val",
      4 => "other value"
    )

实际上是强制下划线(_)前面的数字成为新创建数组中的键。谢谢

最佳答案

这应该做到:

$arr1 = array (
  0 => "3_some val",
  1 => "1_some other val",
  2 => "0_val",
  3 => "2_value",
  4 => "4_other value"
);

$result = array();

foreach($arr1 as $val) {
    list($key, $value) = explode('_', $val, 2);
    $result[$key] = $value;
}

// Sort by keys
ksort($result);

执行print_r($result)将打印出:
Array
(
    [0] => val
    [1] => some other val
    [2] => value
    [3] => some val
    [4] => other value
)

07-24 09:50
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