PHP

json encode decode

$json = '{"a":1,"b":2,"c":3}';
var_dump(json_decode($json)); //converts json to array

$array = [ "a" => 1, "b" => 2, "c" => 3];
echo json_encode($json_encode($json)); //converts array to json

json decode

$json = '{"courseList":[  
            {"course":"1", "course_data1":"Computer Systems(Networks)"},  
            {"course":"2", "course_data2":"Audio and Music Technology"},  
            {"course":"3", "course_data3":"MBA Digital Marketing"}  
        ]}';
var_dump(json_decode($json));