Question

如果我有一个数组

Array
(
[3] => Array
    (
        [0] => title = title dffgfghfdg
        [1] => 2-title2
        [2] => content = content 2
    )

[1] => Array
    (
        [0] => title = title erer
        [1] => 1-title1
        [2] => content = content 1
    )

[0] => Array
    (
        [0] => title = title sdfdf
        [1] => 4-title4
        [2] => content = content 4
    )

[2] => Array
    (
        [0] => title = titledfdf df
        [1] => 3-title3
        [2] => content = content 3
    )
)

我将使每个[1]成为关键。因为我会在[1]中对数组进行排序..？

可能会

Array
(
[2-title2] => Array
    (
        [0] => title = title dffgfghfdg
        [1] => 2-title2
        [2] => content = content 2
    )

[1-title1] => Array
    (
        [0] => title = title erer
        [1] => 1-title1
        [2] => content = content 1
    )

[4-title4] => Array
    (
        [0] => title = title sdfdf
        [1] => 4-title4
        [2] => content = content 4
    )

[3-title3] => Array
    (
        [0] => title = titledfdf df
        [1] => 3-title3
        [2] => content = content 3
    )
)

然后我会用钥匙排序？感谢

Answer 1

使用foreach（）转换数组，然后使用ksort（）。

foreach($a as $k => $v) {
   $b[$v[1]] = $v;
}
ksort($b);

类似的东西。

Answer 2

使用usort。 http://php.net/manual/en/function.usort.php

function user_cmp( $a, $b )
{
    if( $a[1] == $b[1] ) return 0;
    return ($a[1] < $b[1]) ? -1 : 1;
}

$arr = array( ... );
usort( $arr, 'user_cmp' );

获取数组php中的键，然后用键排序数组？

2 个答案: