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

Doing something like this should work if you would like to declare it as JSON only and not by using json_encode. This also eliminates the need to declare multiple variables for each of the arrays inside. But this would be a viable solution only if the contents of the array for data is finite.

$json_string = '{ 
"label": "Devices per year",
"data": [
    [1999, 3.0], [2000, 3.9], [2001, 2.0], [2002, 1.2], [2003, 1.3], [2004, 2.5], [2005, 2.0], [2006, 3.1], [2007, 2.9], [2008, 0.9]
]}';