组阵列由

Question

阵列计数我有IP网络的阵列

<?php 
$array = array(
    '217.192' => array(
     array(
      'ip' => '217.192.133.52', 
      'id' => '1', 
     ), 
     array(
      'ip' => '217.192.98.111', 
      'id' => '2', 
     ), 
    ), 
    '21.170' => array(
     array(
      'ip' => '21.170.171.23', 
      'id' => '3', 
     ), 
     array(
      'ip' => '21.170.212.22', 
      'id' => '4', 
     ), 
    ), 
    '148.11' => array(
     array(
      'ip' => '148.11.11.12', 
      'id' => '5', 
     ), 
     array(
      'ip' => '148.11.122.33', 
      'id' => '6', 
     ), 
     array(
      'ip' => '148.11.22.89', 
      'id' => '7', 
     ), 
    ), 
    '72.1' => array(
     array(
      'ip' => '72.1.98.9', 
      'id' => '8', 
     ), 
    ), 
); 

我需要输出这个数组排序由计数和排序子网（数组的键）。

arsort($array)不能像我想要的那样工作。

我需要 148.11，21.170，217.192，72.1和内这些所谓的排序IPS ...

Answer 1

试试这个：

function sortHelper(array $a, array $b) { 
    $aCnt = count($a); 
    $bCnt = count($b); 
    if ($aCnt == $bCnt) { 
     return 0; 
    } else if ($aCnt > $bCnt) { 
     return -1; 
    } else { 
     return 1; 
    } 
} 

uasort($array, 'sortHelper'); 

// UPDATE: sort inside by IP 

function ipSortHelper(array $a, $b) { 
    $aIp = ip2long($a['ip']); 
    $bIp = ip2long($b['ip']); 
    if ($aIp == $bIp) { 
     return 0; 
    } else if ($aIp < $bIp) { 
     return -1; 
    } else { 
     return 1; 
    } 
} 

foreach ($array as $prefix => $group) { 
    uasort($group, 'ipSortHelper'); 
    $array[$prefix] = $group; 
} 

Answer 2

你将不得不使用“自定义排序功能”：http://www.php.net/usort和写入逻辑排序自己。