在php中对对象数组进行排序

Question

HI i want to sort an array of objects , it is in the form of array which has objects and each objects has key,value , i want to sort the objects based on value, the problem is the values contains the numbers which have spaces in between, and some are empty numbers too, so I am not able to sort it using usort any help would be appreciated.

here's a code snippet

array(4) {
  [0]=>
  object(stdClass)#308 (2) {
    ["key"]=>
    string(2) "AF"
    ["value"]=>
    string(3) "093"
  }
  [1]=>
  object(stdClass)#306 (2) {
    ["key"]=>
    string(2) "AL"
    ["value"]=>
    string(3) "355"
  }
  [2]=>
  object(stdClass)#304 (2) {
    ["key"]=>
    string(2) "DZ"
    ["value"]=>
    string(3) "213"
  }
  [3]=>
  object(stdClass)#302 (2) {
    ["key"]=>
    string(2) "AS"
    ["value"]=>
    string(5) "1 684"
  }

}

I want the result to be sorted based on the value.

Answer 1

You can use

usort($list, function ($a, $b) {
    $a = filter_var($a->value,FILTER_SANITIZE_NUMBER_INT);
    $b = filter_var($b->value,FILTER_SANITIZE_NUMBER_INT);
    return ($a == $b) ? 0 : (($a < $b) ? -1 : 1);
});