本文介绍了维持数字索引协会在array_multisort的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我可以排序多维数组，但没有保持数字索引关联。
我如何才能让数字索引关联？
code：
$服务员[76] =阵列（'重量'=＆GT; 67，'特色'=＆GT; 1）;
$服务员[14] =阵列（重量= GT; 41'菜'=→2）;
$服务员[58] =阵列（重量= GT; 85，特色菜'=→3）;
$服务员[89] =阵列（重量= 98，特色菜'=→4）;
$服务员[68] =阵列（重量= GT; 86，特色菜'=大于5）;
$服务员[31] =阵列（重量= GT; 13'菜'=→6）;
的print_r（$侍应生）;
//获取服务员的名单
的foreach（$服务员为的$ id =＆GT; $服务员）{
$权重[$ ID] = $服务员['重量'];
$特色[$ ID] = $服务员['特色'];}//排序体重下降的数据，特产上升
//把$ data作为最后一个参数，以通用键排序
在array_multisort（
$权重，SORT_DESC，SORT_NUMERIC，
$特色，SORT_ASC，SORT_NUMERIC，
$服务员
）;
的print_r（$侍应生）;
OUTPUT：
阵列
（
[0] =＆GT;排列
（
[重量] =＆GT; 98
[特色] =＆GT; 4
） [1] =＆GT;排列
（
[重量] =＆GT; 86
[特色] =＆GT;五
） [2] =＆GT;排列
（
[重量] =＆GT; 85
[特色] =＆GT; 3
） [3] =＆GT;排列
（
[重量] =＆GT; 67
[特色] =＆GT; 1
） [4] =＆GT;排列
（
[重量] =＆GT; 41
[特色] =＆GT; 2
） [5] =＆GT;排列
（
[重量] =＆GT; 13
[特色] =＆GT; 6
））
所需的输出：
阵列
（
[89] =＆GT;排列
（
[重量] =＆GT; 98
[特色] =＆GT; 4
） [68] =＆GT;排列
（
[重量] =＆GT; 86
[特色] =＆GT;五
） [58] =＆GT;排列
（
[重量] =＆GT; 85
[特色] =＆GT; 3
） [76] =＆GT;排列
（
[重量] =＆GT; 67
[特色] =＆GT; 1
） [14] =＆GT;排列
（
[重量] =＆GT; 41
[特色] =＆GT; 2
） [31] =＆GT;排列
（
[重量] =＆GT; 13
[特色] =＆GT; 6
））
解决方案
$键= array_keys（$侍应生）;
在array_multisort（
$权重，SORT_DESC，SORT_NUMERIC，
$特色，SORT_ASC，SORT_NUMERIC，
$服务员，$键
）;
$服务员= array_combine（$键，$服务员）;
或使用uasort
uasort（
$的数据，
功能（$ some_data，$ another_data）{ $结果= 0; 如果（$ some_data [重量]≥$ another_data ['体重']）{
$结果= -1;
} ELSEIF（$ some_data ['重量'＆LT; $ another_data ['重量']）{
$结果= 1;
} elseif的（$ some_data ['菜']≥$ another_data ['菜']）{
$结果= 2;
} ELSEIF（$ some_data ['特色'＆LT; $ another_data ['特色']）{
$结果= -2;
} 返回$结果; }
）;
但uasort性能比在array_multisort显著恶化
I can sort a multidimensional array but without keeping the numerical index association.
How can I keep the numerical index association?
CODE:
$waiters[76] = array('weight' => 67, 'specialties' => 1);
$waiters[14] = array('weight' => 41, 'specialties' => 2);
$waiters[58] = array('weight' => 85, 'specialties' => 3);
$waiters[89] = array('weight' => 98, 'specialties' => 4);
$waiters[68] = array('weight' => 86, 'specialties' => 5);
$waiters[31] = array('weight' => 13, 'specialties' => 6);
print_r($waiters);
// Obtain a list of waiters
foreach ($waiters as $id => $waiter) {
$weight[$id] = $waiter['weight'];
$specialties[$id] = $waiter['specialties'];
}
// Sort the data with weight descending, specialties ascending
// Add $data as the last parameter, to sort by the common key
array_multisort(
$weight, SORT_DESC, SORT_NUMERIC,
$specialties, SORT_ASC, SORT_NUMERIC,
$waiters
);
print_r($waiters);
OUTPUT:
Array
(
[0] => Array
(
[weight] => 98
[specialties] => 4
)
[1] => Array
(
[weight] => 86
[specialties] => 5
)
[2] => Array
(
[weight] => 85
[specialties] => 3
)
[3] => Array
(
[weight] => 67
[specialties] => 1
)
[4] => Array
(
[weight] => 41
[specialties] => 2
)
[5] => Array
(
[weight] => 13
[specialties] => 6
)
)
DESIRED OUTPUT:
Array
(
[89] => Array
(
[weight] => 98
[specialties] => 4
)
[68] => Array
(
[weight] => 86
[specialties] => 5
)
[58] => Array
(
[weight] => 85
[specialties] => 3
)
[76] => Array
(
[weight] => 67
[specialties] => 1
)
[14] => Array
(
[weight] => 41
[specialties] => 2
)
[31] => Array
(
[weight] => 13
[specialties] => 6
)
)
解决方案
$keys = array_keys($waiters);
array_multisort(
$weight, SORT_DESC, SORT_NUMERIC,
$specialties, SORT_ASC, SORT_NUMERIC,
$waiters, $keys
);
$waiters = array_combine($keys, $waiters);
or use uasort
uasort(
$data,
function ($some_data, $another_data) {
$result = 0;
if ($some_data['weight'] > $another_data['weight']) {
$result = -1;
} elseif ($some_data['weight'] < $another_data['weight']) {
$result = 1;
} elseif ($some_data['specialties'] > $another_data['specialties']) {
$result = 2;
} elseif ($some_data['specialties'] < $another_data['specialties']) {
$result = -2;
}
return $result;
}
);
but the uasort performance is significantly worse than array_multisort
这篇关于维持数字索引协会在array_multisort的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！