Question

I have a problem with arrays in PHP. So, lets see: I have a table “Users” in database with such fields: “name, surname, age, rating”. The number of users is nearly 100. I need to get all of them from database, post it to array, encode them with JSON end show. So I suppose, I need to do the follows:

1. Get one row from DB.
2. Add all data to some array fields like associative array.
3. Push that array to some array container.
4. Encode array container to JSON.

But when I try to encode, I get only last element in array container. I writted something like that:

$arrContainer = array();
$arr = array();
$i = 0;
while($row = getDataFromDB)
{
  arr[$i] = $i;
  arr["name"] = row["name"];
  arr["age"] = row["age"];

  array_push($arrContainer, $arr);
  $i++;
}

JSON.encode($arrContainer);

QUESTION: How can I make array of arrays with some data?

Answer 1

while($row = getDataFromDB)
{
   $arr[]=$row; // add $row as element of $arr array
}

Now you get multidimensional-array and can Json encode it

Besides, some database extensions can returns all data to multidimensional array automatically.
See PDOStatement::fetchAll manual