传递给ajax的PHP排序的关联数字键数组不起作用

Question

I have a function return an associate numeric key array:

public static function getSortedFruits()
{
$fruits = array('100' => 'lemon', '102' => 'orange', '103' => 'apple', '204' => 'banana');
asort($fruits);
print_r($fruits); // return sorted array('103' => 'apple', '204' => 'banana', '100' => 'lemon', '102' => 'orange')
return $fruits;
}

i call this function from PHP code, the array is sorted

$fruits = getSortedFruits(); // sorted array

when I call this function from ajax, the array is the same as before, isn't sorted

$('#fruits').bind('change', function() {
        $.ajax({
            type: 'POST',
            url: '/ajax/getFruits', // route to getFruits function
            dataType: 'json',
            success: function(result) {
               console.log(result); // the array isn't sorted
            });
});

If the key of the $fruits is not numeric, such as a, b, c, the result is sorted as normally both function call and ajax request.

Answer 1

asort method sorts based on array values. There is no difference in order from outputs from print_r and json_encode.

$fruits = array('1' => 'lemon', '2' => 'orange', '3' => 'apple', '4' => 'banana');
asort($fruits);

print_r($fruits);
// Above outputs:Array ( [3] => apple [4] => banana [1] => lemon [2] => orange )

echo json_encode($fruits);
// Above outputs: {"3":"apple","4":"banana","1":"lemon","2":"orange"}