如何将元素（key => value）添加到空数组中？ [关闭]

Question

How add elements (key =>value) to an empty array with a loop? To build Json data for AJAX response. I've tried array_push. But not works

$arr = array();
foreach ($result as $row) { 
   array_push($arr, $row->key => $row->value);                          
}   
$data['message'] = json_encode($arr);

Answer 1

$arr = array();
foreach ($result as $row) { 
   $arr[$row->key] = $row->value;
}