按名称对数组中的数组进行排序

Question

输入:

$sql = array(

    array("id"=>"47", "name"=>"Jason", "device"=>"idevice"),
    array("id"=>"49", "name"=>"uniKornn", "device"=>"idevice"),
    array("id"=>"50", "name"=>"jacob", "device"=>"idevice")
)

输出:

$sql = array(

    array("id"=>"50", "name"=>"jacob", "device"=>"idevice"),
    array("id"=>"47", "name"=>"Jason", "device"=>"idevice"),
    array("id"=>"49", "name"=>"uniKornn", "device"=>"idevice")
)

我想按名称设置数组$ sql的顺序,并且不区分大小写.

Answer 1

function build_sorter($key) {
    return function ($a, $b) use ($key) {
        return strnatcmp($a[$key], $b[$key]);
    };
}

usort($sql, build_sorter('name'));

编辑:对于不区分大小写:

选项1:

function build_sorter($key) {
    return function ($a, $b) use ($key) {
        return strnatcasecmp($a[$key], $b[$key]);
    };
}

usort($sql, build_sorter('name'));

选项2:

function build_sorter($key) {
    return function ($a, $b) use ($key) {
        return strnatcmp(strtolower($a[$key]), strtolower($b[$key]));
    };
}

usort($sql, build_sorter('name'));

完整代码:

<?php

$sql = array(
    array("id"=>"47", "name"=>"Jason", "device"=>"idevice"),
    array("id"=>"49", "name"=>"uniKornn", "device"=>"idevice"),
    array("id"=>"50", "name"=>"jacob", "device"=>"idevice")
);

function build_sorter($key) {
    return function ($a, $b) use ($key) {
        return strnatcmp(strtolower($a[$key]), strtolower($b[$key]));
    };
}

usort($sql, build_sorter('name'));

foreach ($sql as $item) {
    echo $item['id'] . ', ' . $item['name'] .', ' . $item['device'] . "\n";
}

?>