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

I prefer the following syntax which gets the desired result and is clear to read:

$ar = array(
            "label" => "Devices per years",
            "data" => array(array(1999, 3.0), array(2000, 3.9) )
        );

var_dump(json_encode($ar));

The only difference being that in the output "3.0" is rendered as "3". If you need the trailing ".0" you could surround those values with quotes.