如何在PHP中根据数组长度将字符串数组键替换为从0开始的数字？

要将关联数组的键替换为从0开始的数字索引，直接使用PHP内置的array_values()函数即可，它会返回一个仅包含原数组值的新索引数组，自动从0开始编号。

示例代码 #

// 原关联数组
$originalArray = [
    'Cpu' => 'Cpu',
    'Memory' => 'Memory',
    'Ping' => 'Ping',
    'Interface - Ethernet' => 'Interface - Ethernet',
    'Disk - C:' => 'Disk - C:',
    'Disk Reponse - C' => 'Disk Reponse - C',
    'Top Memory' => 'Top Memory',
    'Top Cpu' => 'Top Cpu',
    'Process - DFSR' => 'Process - DFSR',
    'Process - DNS' => 'Process - DNS',
    'Process - IsmServ' => 'Process - IsmServ',
    'Process - lsass' => 'Process - lsass',
    'Process - svchost' => 'Process - svchost',
    'Process' => 'Process',
    'Interface' => 'Interface',
    'Disk' => 'Disk',
    'Disk Reponse' => 'Disk Reponse',
    'Link-Discovery' => 'Link-Discovery',
    'Microsoft Hyper-V Network Adapter #2' => 'Microsoft Hyper-V Network Adapter #2',
    'Mellanox ConnectX-4 Lx Virtual Ethernet Adapter' => 'Mellanox ConnectX-4 Lx Virtual Ethernet Adapter'
];

// 转换为数字索引数组
$indexedArray = array_values($originalArray);

// 输出结果
print_r($indexedArray);

输出效果 #

Array
(
    [0] => Cpu
    [1] => Memory
    [2] => Ping
    [3] => Interface - Ethernet
    [4] => Disk - C:
    [5] => Disk Reponse - C
    [6] => Top Memory
    [7] => Top Cpu
    [8] => Process - DFSR
    [9] => Process - DNS
    [10] => Process - IsmServ
    [11] => Process - lsass
    [12] => Process - svchost
    [13] => Process
    [14] => Interface
    [15] => Disk
    [16] => Disk Reponse
    [17] => Link-Discovery
    [18] => Microsoft Hyper-V Network Adapter #2
    [19] => Mellanox ConnectX-4 Lx Virtual Ethernet Adapter
)

内容的提问来源于stack exchange，提问作者James.R