Sorting Array in php?

Question

i have an array like this

[{"id"="1","rating"=>[{"rating"=>"1"}]},{"id"="2","rating"=>[{"rating"=>"2"}]},{"id"=>"3","rating"=>[{"rating"=>"3"}]}]

here i need sort key based "rating" i need to expect output is

[{"id"="3","rating"=>[{"rating"=>"3"}]},{"id"="2","rating"=>[{"rating"=>"2"}]},{"id"=>"1","rating"=>[{"rating"=>"1"}]}]

can any one please guide how can i get this

Thanks for advance.

Just take a look at the manual, specifically: http://nl3.php.net/manual/en/function.uasort.php — Nanne, Mar 26 '12 at 07:08

score 2 · Answer 1 · answered Mar 26 '12 at 07:15

2

if you want to keep keys:

uasort($data, function($a, $b){ return ($a->rating > $b->rating); });

if you don't

usort($data, function($a, $b){ return ($a->rating > $b->rating); });

answered Mar 26 '12 at 07:15

Vytautas

3,509
1
27
43

score 2 · Answer 2 · edited May 23 '17 at 12:27

2

function aasort (&$array, $key) {
    $sorter=array();
    $ret=array();
    reset($array);
    foreach ($array as $ii => $va) {
        $sorter[$ii]=$va[$key];
    }
    asort($sorter);
    foreach ($sorter as $ii => $va) {
        $ret[$ii]=$array[$ii];
    }
    $array=$ret;
}

aasort($your_array,"rating");

Source: Sort Multi-dimensional Array by Value

edited May 23 '17 at 12:27

Community

1
1

answered Mar 26 '12 at 07:16

Habib

219,104
29
407
436

score 0 · Answer 3 · answered Mar 26 '12 at 07:11

0

yuo can use php function usort.

You should provide your function to implement you sort critiria. For example

 function your_sort($a, $b)
 {
     return $b['rating'] - $a['rating'];
 }

 your_sort($array, "cmp");

answered Mar 26 '12 at 07:11

ab_dev86

1,952
16
21

score 0 · Answer 4 · answered Mar 26 '12 at 07:17

Take care that the items of the array seems to be objects, and that the "rating" property is a string that should probably be converted into numeric.

function f_my_sort($a, $b) {
  if ($a->id==$b->id) return 0;
  return ( intval($a->rating) < intval($b->rating) ) ? -1 : 1;
}

usort($my_array, "f_my_sort");

Sorting Array in php?

4 Answers4