按字母顺序和数字排序的排序功能

Question

I have an array that looks like this:

Array ( [0] => Array ( [id] => 1103 [age] => 37 [gen] => C:3:2:5:1:4 ) [1] => Array ( [id] => 1104 [age] => 37 [gen] => A:3:1:4:1 ) [2] => Array ( [id] => 1105 [age] => 36 [gen] => A:3:2:3:2  ) [3] => Array ( [id] => 1106 [age] => 32 [gen] => B:2:5:1:2:2 ) [4] => Array ( [id] => 1107 [age] => 31 [gen] => C:3:4:4:5:3 [5] => Array ( [id] => 1104 [age] => 37 [gen] => A:3:1:4:1:6 ))

I want to sort the array by the gen key so the result will be like this:

A:3:1:4:1:6

A:3:2:3:2

B:2:5:1:2:2

C:3:2:5:1:4

C:3:4:4:5:3

I tried this code:

    uasort($newArray, function($a, $b) {
        return strnatcasecmp($a['ngen'], $b['ngen']);
    });

But can´t get the correct result. Any ideas?

Answer 1

This function will help you to sort the array, just pass the key by which the array is to be sort.

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

Example Code:

$results = array(0 => array ( 'id' => 1103, 'age' => 37, 'gen' => 'C:3:2:5:1:4' ),
                  1 => array ( 'id' => 1104, 'age' => 37, 'gen' => 'A:3:1:4:1' ),
                  2 => array ( 'id' => 1105, 'age' => 36, 'gen' => 'A:3:2:3:2' ),
                  3 => array ( 'id' => 1106, 'age' => 32, 'gen' => 'B:2:5:1:2:2' ),
                  4 => array ( 'id' => 1107, 'age' => 31, 'gen' => 'C:3:4:4:5:3' ),
                  5 => array ( 'id' => 1104, 'age' => 37, 'gen' => 'A:3:1:4:1:6' )
                 ); 

usort($results, build_sorter('gen'));
echo "<pre>"; print_r($results) ;

Just call build_sorter('gen') in usort callback and pass key gen

This will hive you :

Array
(
    [0] => Array
        (
            [id] => 1104
            [age] => 37
            [gen] => A:3:1:4:1
        )

    [1] => Array
        (
            [id] => 1104
            [age] => 37
            [gen] => A:3:1:4:1:6
        )

    [2] => Array
        (
            [id] => 1105
            [age] => 36
            [gen] => A:3:2:3:2
        )

    [3] => Array
        (
            [id] => 1106
            [age] => 32
            [gen] => B:2:5:1:2:2
        )

    [4] => Array
        (
            [id] => 1103
            [age] => 37
            [gen] => C:3:2:5:1:4
        )

    [5] => Array
        (
            [id] => 1107
            [age] => 31
            [gen] => C:3:4:4:5:3
        )

)