Sorting array values in ascending order

Question

I have store array value in the following variable

$weight[$cQ][$post]

where $cQ is Index and $post is article ID , i am storing rating values in the array.

I have used sort($weight[$cQ][$post]) PHP function for ascending order. But its not ordering array values.. Is there any good solution for sorting array ascending.

Array
(
    [0] => Array
        (
            [948] => 0.0086665
        )

    [1] => Array
        (
            [934] => 0.0119
        )

    [2] => Array
        (
            [932] => 0.0176
        )

    [3] => Array
        (
            [931] => 0.0125
        )

    [4] => Array
        (
            [940] => 0.0148
        )

    [5] => Array
        (
            [930] => 0.01235
        )

    [6] => Array
        (
            [933] => 0.01715
        )

    [7] => Array
        (
            [936] => 0.0168
        )

    [8] => Array
        (
            [945] => 0.0117665
        )
)

okay i have used sort($weight[$cQ][$post]); , still no output ! — SSK
– SSK, Commented Jun 14, 2013 at 8:22

web-nomad · Accepted Answer · 2013-06-14 08:24:11Z

2

Use this:

It assumes every array has only one element as per your example array. If it has many, modify it accordingly.

function cmp( $a, $b ) {
    $key1 = array_keys( $a ); // all array keys in first array
    $key2 = array_keys( $b ); // all array keys in second array

    if ( $a[ $key1[ 0 ] ] == $b[ $key2[ 0 ] ] ) {
        return 0;
    }
    return ( $a[ $key1[ 0 ] ] < $b[ $key2 [ 0 ] ] ) ? -1 : 1;
}

uasort($weight, 'cmp');

Hope this helps.

answered Jun 14, 2013 at 8:24

web-nomad

6,0133 gold badges37 silver badges49 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

SSK Over a year ago

Cannot redeclare cmp() (previously declared

web-nomad Over a year ago

Rename it to something else. You might have a function named cmp in your code elsewhere.

Collectives™ on Stack Overflow

Sorting array values in ascending order

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related