使用php将多维数组的值设置为新数组的键

I am having this array

array (
    0 => array ( 'sno' => 'q3', 'result' => '15', ),
    1 => array ( 'sno' => 'q1', 'result' => '5', ),
    2 => array ( 'sno' => 'q2', 'result' => '10', ),
)

i want this resulting array

array ( 
    'q3' => '15', 
    'q1' => '5',
    'q2' =>'10' 
)

if possible without using any loop? if Yes Then How?

Here is your input array,

$arr=  array (
    0 => array ( 'sno' => 'q3', 'result' => '15', ),
    1 => array ( 'sno' => 'q1', 'result' => '5', ),
    2 => array ( 'sno' => 'q2', 'result' => '10', ),
);

Here is one liner code :

$result = array_combine(array_column($arr, 'sno'), array_column($arr, 'result'));  
// $result = array_column($arr,'result','sno');

What I am doing is

1. array_column will fetch all values in array related to specific key, so I fetched two arrays values to specific keys
2. Then I used array_combine to create an array by using one array for keys and another for its values.

Here is output:

Array
(
    [q3] => 15
    [q1] => 5
    [q2] => 10
)

Here is working code

click here

Using array_reduce() you can create new array contain custom key/value from an array.

$newArr = array_reduce($oldArr, function($carry, $item){
    $carry[$item["sno"]] = $item["result"];
    return $carry;
});

Check code result in demo