Create JSON object using PHP

Question

How can I achieve or create this type JSON object using PHP?

{ 
    \"label\": \"Devices per year\",
    \"data\": [
        [1999, 3.0], [2000, 3.9], [200         


        

Answer 1

$obj = new stdClass();
$obj->label="Devices per year";
$obj->data = array(
    array('1999','3.0'),
    array('2000','3.9'),
    //and so on...
);

echo json_encode($obj);