Create PHP Array From MySQL Result-CodePudding

The output from the mysql db query is like this (example):

type   count   amount
----   -----   ------
A      1       100
B      2       200
C      3       300

and so on... that is saved in a php variable called $data

From this result, I want to loop through the result and create a php array that will output json like this:

{
    "types": [
           { 
            "type": "A",
            "count": 1,
            "amount": 100
           }
           { 
            "type": "B",
            "count": 2,
            "amount": 200
           }
           { 
            "type": "C",
            "count": 3,
            "amount": 300
           }
      ]
}

What I have done so far ... I am able to loop through them like this:

foreach($data as $k=>$v) {
 echo $v->type;
 echo $v->count;
 echo $v->amount;    
}

How do I create a php array with this? I know how to convert to JSON but I need help in writing the loop that will create the array in that format.

CodePudding user response：

Without knowing how you get data into the $data variable, you can construct a new array this way:

$array = ['types' => []];

foreach ($data as $k => $v) {
   $array['types'][] = [
       'type' => $v->type,
       'count' => $v->count,
       'amount' => $v->amount
   ];
}

echo json_encode($array, JSON_PRETTY_PRINT);

CodePudding user response：

From the code you've posted, you already have an array of objects. From that you can simply create the parent object and assign the data to it:

// json_encode will create JSON objects for PHP arrays with string keys.
$parent = ['types'=>$data];
echo json_encode($parent, JSON_PRETTY_PRINT);