PHP 在保留数组键的同时对维度关联数组进行排序
PHP sort dimension associative array while keeping array key
我有这样的数组..
<?php
$a = array(
"2" => array(
"v" => 1
),
"3" => array(
"v" => 2
)
);
usort($a, function($a, $b)
{
return $a['v'] < $b['v'];
});
当我使用usort
按v
的值排序时,它return
Array
(
[0] => Array
(
[v] => 2
)
[1] => Array
(
[v] => 1
)
)
但我希望密钥不被修改,例如
Array
(
[3] => Array
(
[v] => 2
)
[2] => Array
(
[v] => 1
)
)
可能吗?
使用uasort 保留密钥
<?php
$a = array(
"2" => array(
"v" => 1
),
"3" => array(
"v" => 2
)
);
uasort($a, function($a, $b)
{
return $a['v'] < $b['v'];
});
我有这样的数组..
<?php
$a = array(
"2" => array(
"v" => 1
),
"3" => array(
"v" => 2
)
);
usort($a, function($a, $b)
{
return $a['v'] < $b['v'];
});
当我使用usort
按v
的值排序时,它return
Array
(
[0] => Array
(
[v] => 2
)
[1] => Array
(
[v] => 1
)
)
但我希望密钥不被修改,例如
Array
(
[3] => Array
(
[v] => 2
)
[2] => Array
(
[v] => 1
)
)
可能吗?
使用uasort 保留密钥
<?php
$a = array(
"2" => array(
"v" => 1
),
"3" => array(
"v" => 2
)
);
uasort($a, function($a, $b)
{
return $a['v'] < $b['v'];
});